Question

In what diffrent ways can 440 be written as the product of two positve integers

Answer 1

440 = 1 x 2 x 2 x 2 x 5 x 11

(1): 1 x 440

(2): 2 x 220

(2 x 2): 4 x 110

(5): 5 x 88

(2x2x2): 8 x 55

(2 x 5): 10 x 44

(11): 11 x 40

(2x2x5): 20 x 22

No need to continue because the next number is 2 x 11 = 22 and we already have that on the right side, so we have found all of the multiplicative pairs of 440.