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 P
{
public static void Main()
{
            //????????????????????????
            var x = (Console.ReadLine()).Split(' ');

            //?????????????????°?????????
            int a = Int32.Parse(x[0]);
            int b = Int32.Parse(x[1]);
            int c = Int32.Parse(x[2]);

            int countNo = 0;

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

            string D = countNo.ToString();
            //??????
            Console.WriteLine(D);
}
}