It is: 4
The Greatest Common Factor (GCF) of 20 and 36 is: 4
The GCF of 20, 24, and 36 is 4.
The GCF is 4.
The GCF is 4.
The GCF is 2.
It is: 4
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4a
The greatest common factor of 27 and 36 is 9.