Divisor function

Divisor function
Tag	`04J4Z73J5B`
URI	`m2://04J4Z73J5B`
Kind	concept
Writing	W1 stated
MSC	11A25
Same as	Wikidata Q915474 Wikipedia Divisor function

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Summary

The divisor function $\sigma_k$ sends a positive integer $n$ to the sum of the $k$ -th powers of its positive divisors. The definition of the divisor function gives the precise form.

What this node needs for W2

edge instance_of in: at least two examples (0 of 2)
edge not_instance_of in: at least one non-example (0 of 1)
edge specializes both: the more general notions and the special cases (0 of 1)

The writing levels say how complete the text of a node is. They do not measure its truth.

Sources

Web https://en.wikipedia.org/wiki/Divisor_function, lead section

What links here

Definitions

Divisor function 0YEW47VJ0J