27 and 81 are a possibility. Also numbers like 5 and 10, 20 and 40.
12, 24, 120
12, 24, 1200
Two numbers whose greatest common factor (GCF) is 20 are any pair of numbers that are multiples of 20. For example, 20 and 40 have a GCF of 20 because 20 is a factor of both numbers. Another pair could be 60 and 80, as 20 is also a factor of both of these numbers.
The two monomials with a greatest common factor of 4M would be 4M and another monomial that includes 4M as a factor. For example, 4M and 12M would have a greatest common factor of 4M. This is because both 4M and 12M can be divided by 4M without a remainder. The greatest common factor represents the largest monomial that can divide evenly into both monomials.
prime
That happens when one of the numbers is a factor of the other.
There are several possibilities of pairs of numbers whose greatest common factor is 18. 54 and 198 18 and 126 414 and 846 72 and 1422
14 and 28 are two even numbers between 10 and 30 whose greatest common factor is 14.
29 and 4147
this is hard
16, 32 and 48
The GCF is 16.
12 and 20
16 and 8
In that case, one of the numbers is a multiple of the other.
27 = 3*936 = 4*945 = 5*927, 36, and 45 are three different numbers whose greatest common factor is 9.
7 and 14