Answer
320 is not perfect because:
1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 32 + 40 + 64 + 80 + 160 ≠ 320
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Answer
320 is not perfect because:
1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 32 + 40 + 64 + 80 + 160 ≠ 320