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Is 4240 a perfect number? [SOLVED]

Answer


4240 is not perfect because:

1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 40 + 53 + 80 + 106 + 212 + 265 + 424 + 530 + 848 + 1060 + 2120 4240
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