---
tag: 0VV3ZMRF88
kind: concept
name: Number of divisors
msc: [11A25]
specializes: [04J4Z73J5B]
sources:
  - url: https://en.wikipedia.org/wiki/Divisor_function
    locator: lead section
inventory: [8GDRG1CKD7]
---

## Summary

The number of divisors $d(n)$ of a positive integer $n$ is the count of its positive divisors.
The [[definition of the number of divisors|0BKJT6WG96]] gives the precise form.