Smith Numbers/문보창

~cpp 
// no10042 - Smith Numbers
#include <iostream>
#include <cmath>
using namespace std;

void find_smith_number(int n);
int sum_digit_prime_factor(int n);
int sum_digit_number(int n);

int main()
{
	int nCase;
	int i;
	int number;
	
	cin >> nCase;

	for (i = 0; i < nCase; i++)
	{
		cin >> number;
		find_smith_number(number);
	}
	return 0;
}

void find_smith_number(int n)
{
	int i;
	for (i = n + 1; ;i++)
	{
		if (sum_digit_number(i) == sum_digit_prime_factor(i))
			break;
	}
	cout << i << endl;
}

int sum_digit_number(int n)
{
	int sumDigitNumber = 0;
	int temp = n;
	do {
		sumDigitNumber += temp % 10;
		temp /= 10;
	} while (temp != 0);
	return sumDigitNumber;
}

int sum_digit_prime_factor(int n)
{
	int i;
	int sumDigitPrimeFactor = 0;
	int temp = n;
	while (temp % 2 == 0)
	{
		temp /= 2;
		sumDigitPrimeFactor += 2;
	}

	i = 3;
	while (i <= sqrt(temp) + 1)
	{
		if (temp % i == 0)
		{
			sumDigitPrimeFactor += sum_digit_number(i);
			temp /= i;
		}
		else
			i += 2;
	}
	if (sumDigitPrimeFactor == 0 || n == 2)
		return -1;
	if (temp > 1)
		sumDigitPrimeFactor += sum_digit_number(temp);
	return sumDigitPrimeFactor;
}