Greatest divisor of 459, apart from 459 itself, is 153. You need more than one number to have a"common" divisor.
51.
The greatest common divisor is 45.
The Greatest Common Divisor is 10
The Greatest Common Divisor is 28
The Greatest Common Divisor is 4
The Greatest Common Divisor is 4
The Greatest Common Divisor is 35
The Greatest Common Divisor is 1
The Greatest Common Divisor is 2
The Greatest Common Divisor is 22
The Greatest Common Divisor is 9
The Greatest Common Divisor is 19