import java.util.Scanner;
class Main {
	public static void main(String[] args) {
		Scanner kb = new Scanner( System.in);	
		int a,b,c,count;

		a=kb.nextInt();
		b=kb.nextInt();
		c=kb.nextInt();
		count=0;
		for( int i=a; i<=b; i++) {
			if( 0 == c%i ) {
				count++;
			}
		}
		System.out.println( count );	
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz