Answer
3880 is not perfect because:
1 + 2 + 4 + 5 + 8 + 10 + 20 + 40 + 97 + 194 + 388 + 485 + 776 + 970 + 1940 ≠ 3880
Related links:
- All calculations
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- What is the prime factorization of 3880?