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.Linq;

class Program
{
    static void Main()
    {
        int[] arr = Console.ReadLine().Split().Select(int.Parse).ToArray();
        int a = arr[0];
        int b = arr[1];
        int c = arr[2];
        int ans = 0;
        for (int i = a; i <= b; i++)
        {
            if (c % i == 0)
            {
                ans++;
            }
        }
        Console.WriteLine(ans);
    }
}