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;

namespace aoj3d
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = Console.ReadLine();
            string[] num = str.Split(' ');
            int a = int.Parse(num[0]);
            int b = int.Parse(num[1]);
            int c = int.Parse(num[2]);

            int cnt = 0;

            for (int i = a ; i <= b; i++)
            {
                if( c % i == 0)
                {
                    cnt++;
                }
            }
            Console.WriteLine(cnt);
            
        }
    }
}