Sum of divisors σ(n)

Client

Divisor-sum function for perfect/abundant checks.

About Sum of divisors σ(n)

Sum of all positive divisors of n. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

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Nearby workflows on Toolcore

  • Divisors list — List every positive divisor of an integer n—local number theory helper. when units or numeric output should be checked on a related calculator.
  • Euler totient φ(n) — Count integers ≤ n coprime to n. when units or numeric output should be checked on a related calculator.
  • Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
  • Units tools — Data size (binary KB/MB/…), length/temperature/weight, speed, volume, and area (acres, ha, sq ft)—focused routes from this index. when units or numeric output should be checked on a related calculator.

Common use cases

  • Sum of divisors σ(n) for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.