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Q: What number has 21 as a factor and that has exactly 15 factors?

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The greatest common factor is the highest number that divides exactly into two or more numbers. Factors are numbers you can multiply together to get another number. Therefore, the common factors of 15 and 25 are 5 and 1.

Factors are numbers which divide another number exactly. The factors of 11 are 1 and 11. The factors of 15 are 1, 3, 5 and 15. So the only common factor of 11 and 15 is 1.

A factor = a number which can be divided into the given number with no remainder The factors of 15 are 1, 3, 5, and 15.

Not exactly. 1 and 25 are correct, but 15 is not a factor of 125 (125 / 15 = 8.33). If your 1 in the number 15 was meant to be a comma, then you are correct: 1,5, and 25.

A factor of a number, a, is a number, b, that when multipled with another number, c, becomes a. note that both b and c are factors, and a number always has itself and 1 as factors. 0 is special. The factors of 15 are: 1, 3, 5, 15. Only square numbers have odd amount of factors.

This number would have to be a squared number as it only has 15 factors. The number I have calculated is 324 as the square root is 18

Answer: 3Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 21 are 1, 3, 7, and 21.The factors of 27 are 1, 3, 9, and 27.The common factors are 1 and 3. Therefore, the greatest common factor is 3.

The greatest factor of any positive number is the number itself. The greatest common factor of 15 and 25 is 5.

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. 3 is a factor of 9. 3 is a factor of 15. 3 is a common factor of 9 and 15.

The greatest common factor of 10, 15, and 20 is 5.A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 10 are 1, 2, 5, and 10.The factors of 15 are 1, 3, 5, and 15.The factors of 20 are 1, 2, 4, 5, 10, and 20.The common factors are 1 and 5. Therefore, the greatest common factor is 5.If you mean: 10, 15 and 20 then it is 5 that is the greatest common factor

16

It means that 2 numbers have the same factor. Factors are the numbers you need to multiply to get another number. For example 1,3,5,15 are factors of 15 because 1x15 is 15 and 3x5 is 15.

it is 400 the numbers that go in it are 1,2,4,5,8,10,20,40,50,80,100,200,400

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors because they are factors that the numbers have in common. 3 is a factor of 12. 3 is a factor of 15. 3 is a common factor of 12 and 15.

That means that the sum of the number's factors, less than the number itself, is less than the number in question - in this case, if you add the factors of 15 (except 15 itself, which is also a factor of 15), you get a total that is less than 15.

All numbers are a factor of another. Basically a factor is the number times a number which gets another number. Or.... 3 x 5= 15 The factors of 15 are 1,3,5,15; Theres no other explanation I can give ;)

The whole-number factors of 15 are: 1, 3, 5, and 15 .

The factors of 15 are 1, 3, 5 and 15. For them to be common, they need to be compared to another set of factors.

There's no such thing as "common factors" of a single number."Common" means "same for both".A "common" factor is a number that's a factor of at least two different numbers.The factors of 15 are: 1, 3, 5, and 15.Find another number that also has any of these as a factor, and you'll have a 'common' factor.

there is no whole number who's a multiple of 15 and a factor of 12. the factors of 12 are 3,4,6,2, The smallest multiple of 15 is 15, so it's not possible.

Any prime number to the 14th power, like 16384.

I'm not sure exactly what you're looking for. The factors of 15 are 1, 3, 5 and 15. The highest number that 15 can be divided by that will result in a whole number is 15.

1, 3, 5 are all prime factors of 15 3 and 5 only. 1 is a special number that has no factors but itself yet it is not counted as a prime number.

There is neither a greatest common factor nor common factors of a single number, such as 15, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 15 are 1, 3, 5, and 15. The prime factors of 15 are 3 and 5. Examples: The common factors of 6 and 15 are 1 and 3; the greatest common factor is 3. The common factors of 15 and 18 are 1 and 3; the greatest common factor is 3. The common factors of 15 and 55 are 1 and 5; the greatest common factor is 5.

To find the factors of a number, you first need to split that number into its prime factors. In the case of 15, this produces: 15 = 3x5 The next step is to note that every factor of the number (apart from 1) is the product of any combination of its prime factors. Thus, the factors of 15 are: 1, 3, 5 and 15.