The GCF is 28.
It is: 4
The GCF is 4.
The GCF is 8.
The GCF is 4.
The GCF is 4.
The GCF is 14.
The GCF of 16, 28 and 56 is 4.
The GCF is 8.
The GCF for 24 and 40 and 56 is 8
GCF(56, 28, 14) = 14.
Since 28 is a factor of 56, it is automatically the GCF of this problem.