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/**
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 * @param {number} num
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 * @return {boolean}
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 */
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var checkPerfectNumber = function (num) {
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  let total = 0;
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  for (let i = 1; i < num; i++) {
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    if (num % i == 0) {
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      total += i;
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    }
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  }
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  return total == num ? true : false;
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};