Number Games
Number Games
Factor Pairs
Build every whole-number factor pair for a target without repeating a pair.
On phones, tap × to return
How to play
- Enter two whole numbers whose product equals the target.
- Keep searching in order from 1 upward so no pair is missed or repeated.
- Finish when every unique positive factor pair has been found, then review the complete list.
What this game practices
Supports a systematic approach to factors and connects multiplication facts to divisibility. It intentionally limits the task to positive whole-number factors and is not a lesson on prime factorization.
How we checked it
Original coolmath game. Target values and expected pairs are computed locally and checked for reversed duplicates and non-whole-number input.
Reviewed by coolmath Editorial Team · Updated 2026-10-09