Calculation limits

The supported range runs from 0 to 1,000,000,000. Entering a number outside this range shows an explanatory page instead of calculation results, and that page is excluded from search engine indexing.

Divisor lists initially show a preview of the first 24 values, with a "Show all" button to reveal the complete list. The divisor count and sum are always shown in full, regardless of list length.

Not every number page is indexed. The current indexation policy covers the contiguous range from 0 through 10,000, a curated special set of numbers above that ceiling, and additional commonly searched numbers (such as 1729 and 2025). Number pages outside these sets remain reachable but are not indexed.

Tool pages are fully indexable. Dynamic comparison result pages carry a noindex directive while still allowing links to be followed, and random-number results reached through a query parameter are also noindex, with a canonical URL pointing to /random.