Sum of Divisors
Adds up every positive divisor of each number (the sigma function). Free, instant and 100% private in your browser.
Converters Runs in your browser
What does Sum of Divisors do?
Adds up every positive divisor of each number (the sigma function). Paste your number(s) on the left and NMSnabbit instantly shows the sigma σ(n) on the right. Everything runs locally in your browser — nothing is uploaded, so it stays private and works offline. You can process several values at once and copy the result with one click.
How to use the Sum of Divisors
- 1 Type or paste your number(s) into the input box.
- 2 The sigma σ(n) appears instantly in the output box as you type.
- 3 Enter several values separated by spaces or new lines to process them at once.
- 4 Click “Copy output” to copy the result.
What you can use it for
- Quickly adds up every positive divisor of each number (the sigma function) without installing anything.
- Checking results while learning or teaching how number(s) and sigma σ(n) relate.
- Preparing or debugging data for programming, electronics or homework.
- Working privately when the data shouldn't be uploaded to a server.
Frequently asked questions
How do I use Sum of Divisors?
Paste your number(s) into the input field above. Sum of Divisors runs instantly in your browser and shows the sigma σ(n) on the right — no button to press and nothing uploaded.
Is Sum of Divisors free and private?
Yes. Sum of Divisors is completely free with no sign-up, and it runs entirely client-side in your browser, so your data never leaves your device.
Can I process more than one value at once?
Yes. Enter several values separated by spaces or new lines and each one is handled independently, so you can batch-process in a single pass.
More tools
More tools like this:
All Converters