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Factors of a Number

getFactors​

The getFactors function efficiently computes all positive integer factors (divisors) of a number.

Function Signature​

getFactors(int: Numeric | undefined): number[]

Parameters​

  • int: A numeric value or numeric string to find factors for. Can also be undefined.

Return Value​

  • Returns an array of positive integer factors in ascending order for valid input.
  • Returns an empty array for non-integer, negative, or invalid values.

Example Usage​

import { getFactors } from 'nhb-toolbox';

getFactors(12);        // [1, 2, 3, 4, 6, 12]
getFactors(7);         // [1, 7]
getFactors(1);         // [1]
getFactors(-4);        // []
getFactors(undefined); // []
getFactors(6.6);       // []

Notes​

  • Uses the square root method for optimal performance (O(√n) complexity).
  • Returns an empty array for negative numbers, non-integer values, or undefined input.
  • For the number 1, returns [1].
  • Factors are always returned in ascending order.

Aliases​

getFactors can also be imported using the following aliases:

  • factorsOf: Alias for getFactors.
  • getDivisors: Alias for getFactors.

Conclusion​

The getFactors function is useful for mathematical operations requiring divisor analysis, such as number theory calculations, prime factorization, or finding common factors between numbers. It provides efficient computation with proper handling of edge cases.

See Also​