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)

while str = STDIN.gets
  n = str.split(" ")
  a = n[0].to_i
  b = n[1].to_i
  c = n[2].to_i
  num = 0
  
  for i in a..b do
    if c % i == 0
      num += 1
    end
  end
  puts "#{num}"
end