Symbols:D/Divisor Counting Function

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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 .


Sources