Factor Calculator – Instantly Find All Factors of a Number

Find all factors of a number or check if a number is prime

Factor Calculator Tool
Enter a number to find all its factors
Note: Factors are numbers that divide evenly into the given number. Shows count and list of all factors.

The Factor Calculator is a powerful tool for quickly identifying the factors of any number. Whether you are a student, teacher, or professional, this calculator provides fast and accurate results, saving time and eliminating manual errors.It is ideal for mathematics, number theory, algebra, and problem-solving.

What Are Factors?

Factors are numbers that divide another number completely without leaving a remainder. For a number n, any integer a is a factor if n÷a results in an integer.

Example:

  • Factors of 12: 1, 2, 3, 4, 6, 12
  • Factors of 15: 1, 3, 5, 15
     

Factors are fundamental in mathematics for simplifying expressions, solving equations, and analyzing numbers.

History of Factors

  • Ancient Mathematics: Early civilizations used factors for dividing land, distributing goods, and trade calculations.
     
  • Greek Mathematics: Mathematicians like Euclid studied factors to understand divisibility and prime numbers.
     
  • Modern Applications: Today, factors are used in cryptography, computer science, algebra, and mathematical problem solving.

How to Find Factors

  1. Start with 1 and the number itself: These are always factors.
  2. Check divisibility: Test numbers from 2 up to the square root of the number.
  3. Include divisors: If a number divides evenly, include both the divisor and the quotient.
     

Example: Find factors of 28

  • 1 × 28 = 28 = factors: 1, 28
  • 2 × 14 = 28 = factors: 2, 14
  • 4 × 7 = 28 = factors: 4, 7
  • Complete factors: 1, 2, 4, 7, 14, 28

How to Use Our Factor Calculator

  1. Enter Your Number: Input any positive integer.
  2. Click 'Calculate': The calculator instantly lists all factors of the number.
  3. Optional: Use it to check factors of multiple numbers for assignments, exams, or research.

Factor Reference Chart

Number

Factors

6

1, 2, 3, 6

12

1, 2, 3, 4, 6, 12

15

1, 3, 5, 15

28

1, 2, 4, 7, 14, 28

36

1, 2, 3, 4, 6, 9, 12, 18, 36

50

1, 2, 5, 10, 25, 50

81

1, 3, 9, 27, 81

100

1, 2, 4, 5, 10, 20, 25, 50, 100

This chart provides examples of factors for various numbers, useful for learning and reference.

Why Use Our Factor Calculator?

  • Accurate: Eliminates errors in manual calculations.
  • Fast: Instantly finds all factors for small or large numbers.
  • User-Friendly: Designed for students, teachers, and professionals.
  • Versatile: Supports integers of any size.
  • Free & Accessible: No sign-ups, downloads, or subscriptions required.

Practical Applications for Factor Calculator

  • Education: Solve homework problems, exams, and practice factors.
  • Mathematics: Simplify fractions, factorize numbers, and study number properties.
  • Computer Science: Factor numbers for algorithms, encryption, and coding challenges.
  • Finance & Engineering: Divide quantities, calculate ratios, and optimize resources.
  • Daily Life: Find divisors for budgeting, measurement, or splitting items evenly.

Stop manually calculating factors and risking errors! Use Digital Calculator Factor Calculator to get fast, precise, and reliable results for any number.

Frequently Asked Questions

Published: 10/7/2025