Examples
The first few abundant numbers are:
- 12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102, … (sequence A005101 in OEIS).
For example, the divisors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24, whose sum is 60. Because 60 is more than 2 × 24, the number 24 is abundant. Its abundance is 60 − (2 × 24) = 12.
Read more about this topic: Abundant Number
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