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Is 1140 a perfect number? [SOLVED]

Answer


1140 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 10 + 12 + 15 + 19 + 20 + 30 + 38 + 57 + 60 + 76 + 95 + 114 + 190 + 228 + 285 + 380 + 570 1140
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