Abundant Number

An abundant number is a positive number that is less than its sum of proper divisors.

For example, 12 is abundant because the sum of 1+2+3+4+6=16 exceeds 12 itself.

The first 28 abundant number are as follows:

12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102, 104, 108, 112, 114, 120,