Answer
8120 is not perfect because:
1 + 2 + 4 + 5 + 7 + 8 + 10 + 14 + 20 + 28 + 29 + 35 + 40 + 56 + 58 + 70 + 116 + 140 + 145 + 203 + 232 + 280 + 290 + 406 + 580 + 812 + 1015 + 1160 + 1624 + 2030 + 4060 ≠ 8120
Related links:
- All calculations
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