It is: 2
The GCF is 2.
The only common factors of 38 and 90 are 1 and 2, so it is not possible for a common factor of 38 and 90 to be greater than 2, much less 20.
The greatest common factor of 38 and 76 is 38.
1 and 2
The greatest common factor is 2
The greatest common factor for 16 and 38 is 2.
The greatest common factor of 205 and 38 is 1.
The greatest common factor of 38 and 92 is 2.
The greatest common factor of 38 and 104 is 2.
The greatest common factor of 38 and 1,000 is 2.
Since 38 is a factor of 76, all of its factors are common.
The greatest common factor of 38 , 88 = 2