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Is 8160 a perfect number? [SOLVED]

Answer

8160 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 8 + 10 + 12 + 15 + 16 + 17 + 20 + 24 + 30 + 32 + 34 + 40 + 48 + 51 + 60 + 68 + 80 + 85 + 96 + 102 + 120 + 136 + 160 + 170 + 204 + 240 + 255 + 272 + 340 + 408 + 480 + 510 + 544 + 680 + 816 + 1020 + 1360 + 1632 + 2040 + 2720 + 4080 ≠ 8160
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