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 C (judge verdict: Time Limit Exceeded)

int main(){
int a,b,c,s,n;
scanf("%d%d%d", &a,&b,&c);
for(a<=b; a++; ){
s=c%a;
if(s==0) n++;}
printf("%d", n);
return 0;
}