Question

How many ways can a number be written as a product of two numbers?

Answer 1

this way to write36 = 2 2 ⋅ 3 2 , we have 3 ⋅ 3 = 9 "total" divisors ( 1 , 2 , 3 , 4 , 6 , 9 , 12 , 18 , 36 ) but ways to express as a product of two factors (36 ⋅ 1 , 18 ⋅ 2 , 12 ⋅ 3 , 9 ⋅ 4 , 6 ⋅ 6 ).