Factor Calculator
List all positive divisors (factors) of any integer, with factor pairs.
Runs 100% in your browser — nothing is uploaded.
Result
Formula
A divisor d of n satisfies n ÷ d with no remainder.
About this calculator
The Factor Calculator lists all positive divisors (factors) of any integer up to 100,000,000, presenting them both as a sorted list and as factor pairs. It helps users quickly identify the complete set of numbers that divide a given integer without leaving a remainder.
How to use
- 1
Enter the integer you want to factor in the 'Number' field (e.g., 48).
- 2
Click the calculate button to find all positive divisors.
- 3
Review the 'Factors' list and the 'Factor pairs' section, which shows each pair that multiplies to your number.
Frequently asked questions
What is a factor?
A factor (or divisor) of an integer n is a positive integer that divides n exactly, leaving no remainder. For example, the factors of 6 are 1, 2, 3, and 6.
How are factor pairs determined?
Factor pairs are pairs of positive integers (a, b) such that a × b = n. The calculator lists them by pairing the smallest factor with the largest, the second smallest with the second largest, and so on.
Can I enter negative numbers?
No, the calculator only accepts positive integers. Negative numbers are not supported because factors are typically considered positive for this tool.
Please note: Results are estimates for general information only and are not professional or medical/financial advice.