No, 9 is not a factor of 84.
The greatest common factor (or greatest common divisor) of 35 and 84 is 7.
The greatest common factor of 4272 and 84 is 12.
The greatest common factor of 63 , 84 = 21
The greatest common factor of 84 , 40 = 4
The greatest common factor of 84 and 105 is 21.
The greatest common factor of 76 and 84 is 4.
The greatest common factor of 37 and 84 is 1.
The greatest common factor of 630 , 84 = 42
The Greatest Common Factor (GCF) of 84 and 315 is: 21
The greatest common factor of 26 and 84 is 2.
The Greatest Common Factor of 21, 63, 84: 21