Do you mean all the factors? I'm not sure what "common factors" is?
The common factors are: 1, 2
All their common factors are: 1, 2, 4, 8 & 16
2 and 5 are the prime factors that are common to all multiples of 10.
1 and 2 are the common factors of 8 and 10.
The common factors are: 1, 2, 4.
All of the factors of A.
The product of all the common prime factors is the GCF. The product of all common factors would vary according to the list.
Since 18 is a factor of 54, all of its factors are common.
1 and 2 all the common factors of 64,12,18
All the common factors of 99 and 11 are: 1 and 11 .
The common factors are: 1, 2
The common factors are: 1, 5.
The common factors are: 1, 7
The common factors of 25 and 50 are 1, 5 and 25.All of them.
All of the factors of 26 are common with the factors of 52.
"Common" means "same for all". There's never anything 'common' about a single thing, and no 'common' factors of a single number.
All their common factors are: 1, 2, 4, 8 & 16