The GCF is 21.
Ten and 126's highest common factor is two.
The greatest common factor of 30 and 126 is 6 .
The greatest common factor of 91 and 126 is 7.
It is: 42
It is: 18
The GCF is 9.
The HCF is: 7
18
The GCF is 1.
Two or more numbers are needed to work out the highest common factor
The Highest Common Factor is 126
Oh, dude, the highest common factor of 126 and 231 is 21. It's like the biggest number that can divide both 126 and 231 without leaving any remainder. So, yeah, 21 is the winner here.