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Is 8220 a perfect number? [SOLVED]

Answer


8220 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 10 + 12 + 15 + 20 + 30 + 60 + 137 + 274 + 411 + 548 + 685 + 822 + 1370 + 1644 + 2055 + 2740 + 4110 8220
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