21 and 80's highest common factor is one.
7 is the greatest common factor of 14 and 21.
Highest common factor of 273 and 315 is 21.
The GCF is 21.
The highest common factor is 3.
The highest common factor of 21 and 24 is 3.
The GCF is 7.
The highest common factor is 21
The highest common factor of the numbers 12 and 21 is 3.
The highest common factor is 7
The GCF is 21.
it is 7