The GCF is 2.
The greatest common factor of 54 and 80 is 2
The greatest common factor of 80 , 180 = 20
The greatest common factor of 80 and 120 is 40.
The greatest common factor of 25 and 80 is 5.
The greatest common factor of 80 and 126 is 2.
The greatest common factor of 80 and 105 is 5.
The greatest common factor of 80 and 100 is 20.
The greatest common factor of 80 and 176 is 16.
The greatest common factor of 52 and 80 is 4.
The greatest common factor of 80 , 900 = 20
Since 20 is a factor of 80, all of its factors are common.