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Unless you have a specific list, as a general rule, any nonzero whole number can be a factor.

Q: Which numbers are factors

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All nonzero 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 12.

Yes. 1 and the number itself are factors of all numbers.

Prime numbers are 3 and 2. Factors are 1,2,3,6.

Yes. Square numbers have an odd number of factors. 49 has three factors.

Prime numbers have two and only two factors. Composite numbers have three or more.

Related questions

All nonzero numbers have factors. Some numbers have some of the same factors as other numbers. These are called common factors. Some factors are positive numbers. Common factors which are positive numbers would be called positive common factors.

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. Write out the lists of factors of the numbers you want to compare. The numbers that appear on both lists are the common factors.

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors.

All numbers have factors. The factors that are positive numbers are known as positive factors.

All numbers have factors.

Factors don't have numbers. Numbers have factors. Numbers that have the factors 2, 4 and 8 are 8 and all of its multiples.

All nonzero numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. Pick two numbers. Write down their factors. The numbers that appear on both lists are common factors.

Square numbers have odd numbers of factors.

Numbers that have only 2 factors are prime numbers

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors.

All numbers are factors (of their multiples).

That's another term for common factors. All numbers have factors. Some numbers have some of the same factors as other numbers.