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GCF and LCM Calculator
Compare up to ten integers and get both common-factor results in one step.
HOW IT WORKS
A focused tool, with the details that matter.
Calculate the greatest common factor and least common multiple of several integers. Results include enough context to understand what was calculated, not just a number without explanation.
About this tool
What is the GCF?
The greatest common factor is the largest positive integer that divides every input number.
What is the LCM?
The least common multiple is the smallest positive integer divisible by every input number.
When are these useful?
They help with simplifying fractions, matching repeating schedules, and grouping quantities evenly.