The GCF is 20.
The GCF is 400.
The GCF is 1.
The GCF is 25.
The GCF is 25.
The Greatest Common Factor (GCF) is: 20.
The greatest common factor (GCF) is: 20
The GCF is: 4
The GCF is 1.
The GCF is 5.
The GCF is: 4
The greatest common factor of 280 and 400 is 40.The GCF is 40.The GCF is 40.