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Common Factor Calculator

Find the greatest common factor, least common multiple and all common positive factors.

How It Works

Euclid’s algorithm finds GCF; LCM(a,b)=a/GCF(a,b)×b. Positive integers up to 1,000,000, at most 100 values.

Reference Sources

FAQs

How does this calculator work?

Euclid’s algorithm finds GCF; LCM(a,b)=a/GCF(a,b)×b. Positive integers up to 1,000,000, at most 100 values.

What assumptions should I check?

Check the units and definitions shown beside each input. Results use the values you enter.