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;

public class Test
{
    public static void Main()
    {
        int a, b, c, x, n=0;
        string[] str = Console.ReadLine().Split(' ');
        a = int.Parse(str[0]);
        b = int.Parse(str[1]);
        c = int.Parse(str[2]);

        for (x = a; x <= b; x++)
        {
            if (c % x == 0)
            {
                n += 1;
            }
        }

        Console.WriteLine("{0}", n);

    }
}