Do you mean all the factors? I'm not sure what "common factors" is?
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.
1 and 2 all the common factors of 64,12,18
All the common factors of 99 and 11 are: 1 and 11 .
Since 18 is a factor of 54, all of its factors are common.
The common factors are: 1, 7
The common factors are: 1, 5.
The common factors are: 1, 2
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 multiples include 616, 1232, 1848 and so on.