You need at least two numbers to find a GCF.
The Greatest Common Factor (GCF) is: 4
It is: 4
The GCF is 4.
The GCF is 8.
The GCF is 2.
The GCF is 8.
The GCF is 4.
The GCF is 8.
The GCF of 16,24,56 is 8.
It is two.
The GCF is 1.
The least common factor of any set of integers is 1.