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Perfect Number
Is 680 a perfect number?
Is 680 a perfect number? [SOLVED]
Answer
680 is not perfect because:
1 + 2 + 4 + 5 + 8 + 10 + 17 + 20 + 34 + 40 + 68 + 85 + 136 + 170 + 340
≠
680
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680 is not perfect because:
680 is not perfect because:
