public static int findDigits(int n)
    {
        string nstr = n.ToString();
        int returnNum = 0;
        
        foreach (char c in nstr){
            int cur = c - '0';
            
            if (cur == 0){
                continue;
            }
            
            if (n % cur == 0){
                returnNum++;
            }
            
        }
        
        return returnNum;
    }