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;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ITP1_3_D
{
    class Program
    {
        static void Main(string[] args)
        {
            int count = 0;
            var input = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToArray();

            for(int i = input[0]; i < input[1]+1; i++)
            {
                if (input[2] % i == 0) count++;
            }

            Console.WriteLine(count);
                
         }
    }
}