The GCF is 4.
The GCF of 56 and 160 is 8. The LCM is 1120.
The GCF is 1.
You need at least two numbers to find a GCF. If that's 12, 20, 32 and 56, the GCF is 4.
The GCF of 20, 28, and 56 is 4.
It is: 4
The GCF is 4.
The GCF is 4.
The GCF is 2.
4
It is: 4
The lowest common factor of any set of integers is 1.