Here are the greatest common factors of the pairs of numbers including 72: GCF of 1, 72 is 1 GCF of 2, 72 is 2 GCF of 3, 72 is 3 GCF of 4, 72 is 4 GCF of 5, 72 is 1 GCF of 6, 72 is 6 GCF of 7, 72 is 1 GCF of 8, 72 is 8 GCF of 9, 72 is 9 GCF of 10, 72 is 2 GCF of…