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 Ruby (judge verdict: Accepted)

# frozen_string_literal: true

a, b, c = gets.chomp.split.map(&:to_i)
ans = 0
a.upto(b) do |x|
  ans = (c % x).zero? ? ans + 1 : ans
end
puts ans