Find all integers $n$ for which $\phi (n)\mid n$.
($\phi (n)$; the number of integers that are less than $n$ and coprime with $n$. For example, $\phi (5)=4$; because $1,2,3,4$ are all coprime with $5$. $\phi (6)=2$.)
phi (n) divides n [self-made???]
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Re: phi (n) divides n [self-made???]
Last edited by Phlembac Adib Hasan on Thu Apr 04, 2013 8:19 am, edited 1 time in total.
Reason: Post removed for using slang words
Reason: Post removed for using slang words
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