Dart Program – Factors of a Number

Find Factors of a Number using Dart

In the following program, we read a number from user via console, and find all the possible factors of this number.

We store the factors in a Set.

main.dart

import 'dart:io';

Set<int> factors(N) {
  Set<int> result = {};

  for (var i = 1; i <= N / i; ++i) {
    if (N % i == 0) {
      result.add(i);
      result.add((N / i).floor());
    }
  }

  return result;
}

void main() {
  print('Enter N');
  var N = int.parse(stdin.readLineSync()!);
  var result = factors(N);
  print('Factors of $N\n$result');
}

Output

Enter N
120
Factors of 120
{1, 120, 2, 60, 3, 40, 4, 30, 5, 24, 6, 20, 8, 15, 10, 12}

Summary

In this Dart Tutorial, we have written a Dart program to find all the possible factors of a given number.