1,2,4
4
The only common factor of 4 and 5 is 1. 4 and 5 are common factors of 20 and 40.
20, among others.
The greatest common factor (GCF) is 2.
20 and 40.
140
20
Factors of 20:1,2,4,5,10,20Factors of 65:1,5,13,65The common factors are 1 and 5.
The common factors of 18 and 20 are 1 and 2.
Common factors for 20 & 25 are: 1 & 5
The common factors of 20 and 26 are 1 and 2
The common factors of 20 and 22 are 1, 2.