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;
using System.Collections.Generic;


//namespace _3_D

class Program
{
    static void Main(string[] args)
    {
        //???????????????3????????????????????????????????????
        string readData = Console.ReadLine();

        //???????????¨??????????????????????????????a,b,c????????????????????????
        string[] readDataValue = readData.Split(' ');
        int a = int.Parse(readDataValue[0]);
        int b = int.Parse(readDataValue[1]);
        int c = int.Parse(readDataValue[2]);

        //number???????????????a??¨b????´???°?????°
        int number = 0;

        //a??????b?????§?????°????????????????????????????????? c ????´???°???????????????????????????
        for (int x = a; x <= b; x++)
        {
            if (c % x == 0)
            {
                number++;
            }
        }
        Console.WriteLine(number);


    }
}