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Perfect Number
Is 820 a perfect number?
Is 820 a perfect number? [SOLVED]
Answer
820 is not perfect because:
1 + 2 + 4 + 5 + 10 + 20 + 41 + 82 + 164 + 205 + 410
≠
820
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Is 820 a composite number?
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820 is not perfect because:
820 is not perfect because:
