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Q: How many whole numbers are factors of 15?

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1.3.5.15

Factors refer to whole numbers, not decimals.

They are: 1, 3, 5, 9, 15, 45.

Any whole number (integer) has factors. Factors are numbers that can be divided into another number. For example the factors of 15 are: 1, 3, 5 and 15 (1 times 15 and 3 times 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.

15

1, 2, 3, 5, 6, 10, 15, and 30.

Because 1, 3, 5 and 15 are the only positive whole numbers that will divide evenly into 15 with no remainder.

12: 1 2 3 4 5 6 10 12 15 20 30 60.

No, they are factors of 15. Factors go into numbers, numbers go into multiples.

Prime numbers which are factors of 15: 3&5.

The factors of 15 are: 1, 3, 5, 15.

There are infinitely many odd whole numbers with 12 factors. The smallest of these is 315 = 3^2 x 5 x 7. Its factors are 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, and 315.

140 isn't a whole number.

They are all positive two-digit whole numbers between 15 and 65. As to factors, only 1.

Two prime factors which are 3 and 5

15.6667

12

1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150

Yes. Called 'factors', the positive whole numbers that go into 285 evenly are these: 1, 3, 5, 15, 19, 57, 95, 285.

9, 15, 45 are the composite factors of 45.

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.

-15 and -14 or 14 and 15 <><><><><> Or, if you consider whole numbers to be positive integers, then just 14 and 15.

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.

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