the whopper
The greatest factor of 21 and 16 is 21, which is a factor of 21 but not of 16.
The Greatest Common Divisor of 21, 189 is 21.
The Greatest Common Factor of 21, 63, 84: 21
The greatest common factor of 21 and 77 is 7.
Because 21 is a factor of 63. 21 is the greatest factor of 21. A larger number doesn't exist.
The greatest common factor of 63 and 147 is 21.
21
The greatest common factor of 21 and 75 is 3.
The greatest common factor of 21 and 162 is 3.
The greatest common factor of 21 and 322 is 7.
The Greatest Common Factor of 21, 9 is 3.
The greatest common factor of 21 and 102 is 3.