The factor pairs of 8 are (8,1) and (4,2)
They aren't ranked by size.
The factor pairs of 8 are 1,8 and 2,4
8 and 16, among others.
16 and 24 have a GCF of 8.
The GCF of 8 and 15 is 1.
8 and 16, among others.
4 and 8, among others.
The factor pairs of 8 are (8,1)(4,2) The GCF requires at least two numbers.
The greatest common factor of 8 and 32 is 8.
The greatest common factor of 8 and 400 is 8.
The greatest common factor of 1624 , 8 = 8
Any pair of prime numbers
28