Answer
8140 is not perfect because:
1 + 2 + 4 + 5 + 10 + 11 + 20 + 22 + 37 + 44 + 55 + 74 + 110 + 148 + 185 + 220 + 370 + 407 + 740 + 814 + 1628 + 2035 + 4070 ≠ 8140
Related links:
- All calculations
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- What is the prime factorization of 8140?