Number Theory

Common Factor Calculator

List the factors that several integers share in common.

Preparing Common Factor Calculator

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Input

Enter the integers, and the calculator will list the factors that divide all of them exactly. You will see the result first and the step-by-step solution below.

Input summary

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Step by Step Calculation

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Calculate first and the full working will appear below automatically.

How to use Common Factor Calculator

Paste the numbers you want to compare, and the calculator will return their shared factors.

What this calculator is for

This calculator is for factor comparison, simplifying ratios and fractions, and number-theory questions where you need more than just the greatest common factor.

Tips

Common factors are the overlap between the factor lists of all entered numbers.
If the list contains 1 only, the numbers have no larger shared factor.
Use the GCF tool if you need only the largest shared factor rather than the full common-factor list.