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Is 2720 a perfect number? [SOLVED]

Answer


2720 is not perfect because:

1 + 2 + 4 + 5 + 8 + 10 + 16 + 17 + 20 + 32 + 34 + 40 + 68 + 80 + 85 + 136 + 160 + 170 + 272 + 340 + 544 + 680 + 1360 2720
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