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;
class Program
{
    static void Main(string[] args)
    {
        // スペース区切りの整数の入力
        string[] input = Console.ReadLine().Split(' ');
        int a = int.Parse(input[0]);
        int b = int.Parse(input[1]);
        int c = int.Parse(input[2]);
        int counter = 0;
        while (true)
        {
            if(c%a==0) counter++;
            if (a == b) break;
         	a++;
        }
        Console.WriteLine(counter);

    }
}