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()
    {
        // Input
        string[] str = Console.ReadLine().Split(' ');

        int a = int.Parse(str[0]);
        int b = int.Parse(str[1]);
        int c = int.Parse(str[2]);
        int ans = 0;

        for (int i = a; i <= b; i++)
        {
            if (c % i == 0)
            {
                ans++;
            }
        }

        // Output
        Console.WriteLine("{0}", ans);
    }
}