1, 2, 5, 10 is all of them.
10
It is 10
Two of them.
No. 10 is not a prime number, which means it cannot be a prime factor. It can be a factor, but not a prime factor.
The greatest common factor can only be found if there are two or more numbers. The factors of 10 are 1, 2, 5, and 10.
10 has two factor pairs:10 = 1 x 1010 = 2 x 5
10 and 20, among others.
Increasing by a factor of ten is to multiply by 10. By extension, decreasing by a factor of 2 would be to divide by 2.
Ten and 126's highest common factor is two.
84 and ten's highest common factor is two.
10 and 1490