Answer
1400 is not perfect because:
1 + 2 + 4 + 5 + 7 + 8 + 10 + 14 + 20 + 25 + 28 + 35 + 40 + 50 + 56 + 70 + 100 + 140 + 175 + 200 + 280 + 350 + 700 ≠ 1400
Related links:
- All calculations
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