Problem:
How Many Divisors?

Write a program which reads three integers a, b and c, and prints the number of divisors of c between a and b.

Input

Three integers a, b and c are given in a line separated by a single space.

Output

Print the number of divisors in a line.

Constraints

1 ≤ a, b, c ≤ 10000

a ≤ b

Sample Input 1

5 14 80

Sample Output 1

3

Solution in C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

    class Program
    {
        static void Main(string[] args)
        {
            string[] strInputArray = Console.ReadLine().Split(' ');
            int[] inputArray = Array.ConvertAll<string, int>(strInputArray, delegate(string value) { return int.Parse(value); });
            int cnt = 0;
            for (int i = inputArray[0]; i <= inputArray[1]; i++)
            {
                if (inputArray[2] % i == 0)
                {
                    cnt++;
                }
            }
            Console.WriteLine(cnt);
            Console.ReadLine();
        }
    }