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A positive integer n is nice if there is a positive integer m with exactly four positive divisors (including 1 and m) such that the sum of the four divisors is equal to n. Find the sum of all the nice numbers in the set \(\{ 2010,2011,2012,\dots,2019 \}.\)

 Jul 4, 2022
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The answer is 4.

 Jul 4, 2022

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