#include <stdio.h>
int main(void){
	
	int a,b,c,i,j;
	int ans1 = 0,ans2 = 0,ans;
	int cnt;
	
	
	scanf("%d %d %d",&a,&b,&c);
	
	for(i=a;i<=d;i++){
		if(c%i == 0) cnt++;
	}
	
	printf("%d",cnt);
	
	return 0;
	
	
	
	
	
}