1. Reduce all numbers to prime factors
2. Find primes that are common in all numbers
3. Multiply the common primes together
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
The Greatest Common Divisor is 13