Answer
1520 is not perfect because:
1 + 2 + 4 + 5 + 8 + 10 + 16 + 19 + 20 + 38 + 40 + 76 + 80 + 95 + 152 + 190 + 304 + 380 + 760 ≠ 1520
Related links:
- All calculations
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- What is the prime factorization of 1520?