Prove that $\prod_{d|n} d = n^{\frac{τ(n)}{2}}$
Prove that $\prod_{d|n} d = n^{\frac{τ(n)}{2}}$
1
$\begingroup$
number-theory
-
2You should both type using LaTeX, to make your stuff crystal clear, and add some explanations, e.g.: it "seems obvious" that $\,\tau\,$ is some kind of arithmetical function...but which one? – 2012-10-18