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)

a, b, c= gets.chomp.split(" ").map(&:to_i)

result = []
i = 1

while i <= c do
  remainder = c % i
  if remainder == 0
    result << i
  end 
  i += 1
end

count = 0

(a..b).each do |e|
  result.each do |i|
    if e == i
      count += 1
    end
  end
end

puts count