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Is 3440 a perfect number? [SOLVED]

Answer


3440 is not perfect because:

1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 40 + 43 + 80 + 86 + 172 + 215 + 344 + 430 + 688 + 860 + 1720 3440
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