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Is 3640 a perfect number? [SOLVED]

Answer


3640 is not perfect because:

1 + 2 + 4 + 5 + 7 + 8 + 10 + 13 + 14 + 20 + 26 + 28 + 35 + 40 + 52 + 56 + 65 + 70 + 91 + 104 + 130 + 140 + 182 + 260 + 280 + 364 + 455 + 520 + 728 + 910 + 1820 3640
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