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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.

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12y ago
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10y ago

Four: 1 3 5 15.

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Q: How many differnet whole numbers are factors of 15?
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How many factors do you have to list when it asks you find all of the whole number factors?

All of them. Different numbers have different numbers of factors.

How many factors under 1 does 12 have?

12 does not have any factors under 1, factors are whole numbers.

How many whole number factors that can be divisible forty-eight are there?

48 is divisible by ten factors. There is an infinite amount of numbers divisible by 48.

How many whole number factors do 44 and 116 have in common?

Three factors in common.

How many numbers have exactly two factors?

Prime numbers have exactly two numbers. There is theoretically an infinite number of them.