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# Category:Divisor function

${\displaystyle \sigma _{k}(n)\equiv \sum _{d|n}d^{k},\ k\geq -1,\ n\geq 1.}$

## Subcategories

This category has the following 4 subcategories, out of 4 total.

## Pages in category "Divisor function"

The following 4 pages are in this category, out of 4 total.