21 is the largest factor of 21
The greatest factor of 21 and 16 is 21, which is a factor of 21 but not of 16.
Because 21 is a factor of 63. 21 is the greatest factor of 21. A larger number doesn't exist.
Aside from itself (21), the highest integer factor of 21 is 7.
The greatest common factor of 21 and 63 is 21.Since 21 is a factor of 63, it is automatically the GCF.
Since 21 is a factor of 147, it is automatically the GCF.
Since 21 is a factor of 105, it is automatically the GCF.
The Greatest Common Factor of 21, 63, 84: 21
The greatest common factor of 21 and 77 is 7.
There are two factor pairs of 21: 21 = 1 x 21 21 = 3 x 7
The GCF is 21.
The common factor of 3 and 21 is 3. *