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Is 3840 a perfect number? [SOLVED]

Answer

3840 is not perfect because:

1 + 2 + 3 + 4 + 5 + 6 + 8 + 10 + 12 + 15 + 16 + 20 + 24 + 30 + 32 + 40 + 48 + 60 + 64 + 80 + 96 + 120 + 128 + 160 + 192 + 240 + 256 + 320 + 384 + 480 + 640 + 768 + 960 + 1280 + 1920 ≠ 3840
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