Answer
870 is not perfect because:
1 + 2 + 3 + 5 + 6 + 10 + 15 + 29 + 30 + 58 + 87 + 145 + 174 + 290 + 435 ≠ 870
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Answer
870 is not perfect because:
1 + 2 + 3 + 5 + 6 + 10 + 15 + 29 + 30 + 58 + 87 + 145 + 174 + 290 + 435 ≠ 870