The prime factors of a number are all of the prime numbers that can be multiplied together to get the number.
Your program should find the prime factors recursively. Find the first factor by trying the divisors
2,3,5,7,11,13, 15 (15 won't work because we already tried 3 and 5, but it is easier to count by 2's) . If no divisor works up to the square root, then the number is prime.
Lets see how we got the results for 24.
The user entered 24 and we printed "24=1*"
We call factors(24). In factors(24) we find the divisor 2 and print "2*" and then call factors(12).
In factors(12) we find the divisor 2 and print "2*" and then call factors(6).
In factors(6) we find the divisor 2 and print "2*" and then call factors(3).
In factors(3) we cannot find a divisor so we print "3" and end.

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#include <iostream>

using namespace std;

void primeFactors(int num);

int main()
    int num;

    cout << "Please enter in the number that we want to find the prime factors of: ";
    cin >> num;
    cout << "Factors of " << num << " = ";
    cout << "\n";
    return 0;

void primeFactors(int num)
    int factor = 2;

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