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If we let \(f(n)\) denote the sum of all the positive divisors of the integer \(n\), how many intergers \(i\) exist such that \(1 ≤ i ≤ 2010\) and \(f(i) = {1 + \sqrt{i} + i}\) ?

 Mar 9, 2021
 #1
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There are 50 such integers i.

 Mar 9, 2021
 #2
avatar+86 
+1

Its wrong

amygdaleon305  Mar 9, 2021

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