C++ Program – Factors of a Number

In this C++ tutorial, you will learn how to write a program to find the factors of a given number.

Display all Factors of a Number Program in C++

To print all the factors of a number n, iterate from 1 to n in a loop, and during each iteration check if this number divides n with zero reminder. All those numbers that leave zero reminder are the factors of the given number.

Program

In the following program, we read a number to n from user via console input, and print all the factors of this number. We use C++ For Loop for iteration.

C++ Program

#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "Enter a number : ";
    cin >> n;
    
    for (int i = 1; i <= n; ++i) {
        if (n % i == 0) {
            cout << i << " ";
        }
    }
    cout << endl;
}

Output

Enter a number : 10
1 2 5 10 
Program ended with exit code: 0

Enter a number : 24
1 2 3 4 6 8 12 24 
Program ended with exit code: 0

Conclusion

In this C++ Tutorial, we learned how to display all the factors of a given number in C++, with example program.