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Quick answer: enter any number above — instantly see all of its factors plus its prime factorization, e.g. 24 = 1, 2, 3, 4, 6, 8, 12, 24.
Factor calculator
Short answer: a factor is a number that divides another evenly. Enter any number above for its complete factor list and prime factorization.
Factors of 24
Short answer: the factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24 — eight factors total, with prime factorization 24 = 2 × 2 × 2 × 3. Try 18, 12 or 72 in the presets above.
What is prime factorization?
Short answer: prime factorization breaks a number into its prime building blocks — e.g. 72 = 2 × 2 × 2 × 3 × 3. The calculator shows it for every number you enter.
Frequently asked questions
What are the factors of 24?
1, 2, 3, 4, 6, 8, 12, 24. Prime factorization: 2 × 2 × 2 × 3. Enter any number above for its full factor list.
How do you find all factors of a number?
Test every integer up to the square root — each divisor found gives a pair. The calculator does this instantly for numbers up to 12 digits.
What is the difference between factors and multiples?
Factors divide INTO a number (factors of 12: 1, 2, 3, 4, 6, 12); multiples are what you get multiplying BY it (multiples of 12: 12, 24, 36…).
How do you know if a number is prime?
A prime has exactly two factors: 1 and itself. The calculator flags prime numbers in the result.
What are the factors of 18?
1, 2, 3, 6, 9, 18 — six factors, prime factorization 2 × 3 × 3. Tap the preset above to see it.
Is this factor calculator free?
Yes — unlimited calculations, free forever. No account, no limits. Everything runs in your browser.