+0

# Number theory

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55
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+86

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
0

There are 50 such integers i.

Mar 9, 2021
#2
+86
+1

Its wrong

amygdaleon305  Mar 9, 2021