Factor Calculator

Find all factors, prime factorization, factor tree, GCF, and LCM — with step-by-step breakdowns.

How It Works

  1. Factor finder. Enter any positive integer to list all factors, factor pairs, and a factor tree.
  2. Prime factorization. See the number written as a product of primes (e.g. 120 = 2³ × 3 × 5).
  3. Number type. The tool flags prime, composite, perfect, deficient, or abundant numbers automatically.
  4. GCF block. Enter two or more comma-separated integers to find the greatest common factor.
  5. LCM block. Use the same format to find the least common multiple with prime-power steps.

Also try our Fraction Calculator or Simplify Calculator.

Enter values to see results.

Formula & Reference

Factor: n % d = 0 · GCF: product of lowest shared prime powers · LCM: product of highest prime powers