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Is 4140 a perfect number? [SOLVED]

Answer


4140 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 9 + 10 + 12 + 15 + 18 + 20 + 23 + 30 + 36 + 45 + 46 + 60 + 69 + 90 + 92 + 115 + 138 + 180 + 207 + 230 + 276 + 345 + 414 + 460 + 690 + 828 + 1035 + 1380 + 2070 4140
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