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)

def toi(a)
	b = []
	a.each do |n|
		b << n.to_i
	end
	b	
end
a=toi(gets().split)
i = 0
x = a[0]
y = a[1]
z = a[2]
while x <= y
	if z.modulo(x) == 0
		i += 1
	end
	x +=1
end

puts i