# Symbols:D/Divisor Counting Function

## Divisor Counting Function

$\map d n$

Often seen as the symbol used to denote the Divisor Counting Function.

This is usually denoted on $\mathsf{Pr} \infty \mathsf{fWiki}$ using the symbol as $\sigma_0$ (the Greek letter sigma).

The $\LaTeX$ code for $\map d n$ is \map d n .