Java Program to Display Factors of a Number

Example 1: Factors of a Positive Integer

public class Main {

  public static void main(String[] args) {

    // positive number
    int number = 60;

    System.out.print("Factors of " + number + " are: ");

    // loop runs from 1 to 60
    for (int i = 1; i <= number; ++i) {

      // if number is divided by i
      // i is the factor
      if (number % i == 0) {
        System.out.print(i + " ");
      }
    }
  }
}

Output

Factors of 60 are: 1 2 3 4 5 6 10 12 15 20 30 60

Example 2: Factors of Negative Number

class Main {

  public static void main(String[] args) {

    // negative number
    int number = -60;
    System.out.print("Factors of " + number + " are: ");

    // run loop from -60 to 60
    for(int i = number; i <= Math.abs(number); ++i) {

      // skips the iteration for i = 0
      if(i == 0) {
        continue;
      }
      else {
        if (number % i == 0) {
          System.out.print(i + " ");
        }
      }
    }
  }
}

Output

Factors of -60 are: -60 -30 -20 -15 -12 -10 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6 10 12 15 20 30 60  

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