Do all even numbers have only even numbers for factors?

Answer 1

At least one of the factors of an even number must be even, because the product of odd factors is always odd.

Answer 2

No. For example, 30 is an even number but two of its factors are odd; 5 and 15.

Answer 3

Since 1 is a factor of every positive integer, there are no numbers with only even factors.

Answer 4

Odd numbers only have odd factors. The GCF would have to be odd.

Answer 5

All even numbers have two as a factor. Since two will be a common factor of any set of even numbers, the GCF will also have two as a factor, making it even.

Answer 6

Yes, that's true.

Answer 7

That is true.

Answer 8

No.

Answer 9

Yes.

Answer 10

Yes, it is.