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Factors & Multiples Calculators

6 free online tools

Find GCF, LCM, prime factors, and common divisors. Essential tools for number theory and fraction simplification.

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Greatest Common Factor (GCF)

Calculate GCF, GCD, or HCF of two or more numbers using factorization with step-by-step work.

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Least Common Multiple (LCM)

Find the LCM of two or more numbers using prime factorization, listing multiples, or GCF method.

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Prime Number Calculator

Check if a number is prime and find prime factorization. Uses the square root method for primality testing.

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Factoring Calculator

Find all factors and factor pairs of positive or negative integers using trial division.

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Common Factors Calculator

Find common factors (common divisors) of a set of integers and identify the GCF.

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Euclid's Algorithm Calculator

Find the GCF/GCD of two numbers using Euclid's Algorithm with step-by-step work.

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About Factors & Multiples Tools

Our factors & multiples calculators are designed to help students, teachers, and professionals solve math problems quickly and accurately. Each calculator provides step-by-step solutions so you can understand the process, not just get the answer.

All calculations are performed instantly in your browser - no waiting for server responses, and your data stays private. These tools work on any device: desktop, tablet, or mobile.

Available Factors & Multiples Tools:

  • Greatest Common Factor (GCF) - Calculate GCF, GCD, or HCF of two or more numbers using factorization with step-by-step work.
  • Least Common Multiple (LCM) - Find the LCM of two or more numbers using prime factorization, listing multiples, or GCF method.
  • Prime Number Calculator - Check if a number is prime and find prime factorization. Uses the square root method for primality testing.
  • Factoring Calculator - Find all factors and factor pairs of positive or negative integers using trial division.
  • Common Factors Calculator - Find common factors (common divisors) of a set of integers and identify the GCF.
  • Euclid's Algorithm Calculator - Find the GCF/GCD of two numbers using Euclid's Algorithm with step-by-step work.