As a product of its prime factors: 2*2*5 = 20
9 and 11.
4 and 11.
A factor multiplies with another factor to create a product.
30, 60, and 90.
4 and 9
20
26
-70
41
20, 40, 60, 80, 100 and so on.
-27
9 and 11.
-12.385165 and -1.614835
They are: 20, 40, 60, 80, 100 and 120
(6 + √20) ≈ 10.472 and (6 - √20) ≈ 1.528
20
84