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Is 8140 a perfect number? [SOLVED]

Answer


8140 is not perfect because:

1 + 2 + 4 + 5 + 10 + 11 + 20 + 22 + 37 + 44 + 55 + 74 + 110 + 148 + 185 + 220 + 370 + 407 + 740 + 814 + 1628 + 2035 + 4070 8140
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