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Is 8100 a perfect number? [SOLVED]

Answer

8100 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 9 + 10 + 12 + 15 + 18 + 20 + 25 + 27 + 30 + 36 + 45 + 50 + 54 + 60 + 75 + 81 + 90 + 100 + 108 + 135 + 150 + 162 + 180 + 225 + 270 + 300 + 324 + 405 + 450 + 540 + 675 + 810 + 900 + 1350 + 1620 + 2025 + 2700 + 4050 ≠ 8100
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