You need at least two numbers to find a GCF.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 31.
The GCF is 4.
The GCF is: 4
The GCF is 1.
The GCF is: 2
The GCF is 4.
The GCF is 4.
The GCF is 4.
No. 8 is not a factor of 124. The GCF is 4. 8 = 2 x 4 124 = 31 x 4