There is neither a greatest common factor nor common factors of a single number, such as 105, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor.
45 = 3 x 3 x 5; 105 = 3 x 5 x 7. Common factors 3 x 5 so HCF = 15.
The GCF is 21.
The greatest common factor of 63, 84, and 105 is 21.
1 is there greatest common factor.
3The GCF is: 2121.The GCF is 21.
The GCF for 21, 63, and 105 is 21.
3
It is: 3
The GCF is 21.
The GCF is 21.
The GCF is 1.
The GCF is 21.
The GCF is 21.
The GCF is 21.