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)

s=STDIN.gets
a=s.split[0].to_i
b=s.split[1].to_i
c=s.split[2].to_i

ret=0
a.upto(b){ |n|  ret += 1 if c % n == 0 }

puts ret