# More fun in 2015, Part 39

$\sum_{d|n}\mu\left(\frac{n}{d}\right)f(d)=n$

If $$f(d)$$ is an arithmetic function such that the equation above holds for all positive integers $$n$$, find $$f(2015)$$.

Notation: $$\mu$$ denotes the Möbius function.

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