import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	} main {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	} BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String line = br.readLine(); line br.readLine() br.readLine br String[] hikakuStr = line.split("[\\s]+"); hikakuStr line.split("[\\s]+") line.split line "[\\s]+" int a = Integer.parseInt(hikakuStr[0]); a Integer.parseInt(hikakuStr[0]) Integer.parseInt Integer hikakuStr[0] hikakuStr 0 int b = Integer.parseInt(hikakuStr[1]); b Integer.parseInt(hikakuStr[1]) Integer.parseInt Integer hikakuStr[1] hikakuStr 1 int c = Integer.parseInt(hikakuStr[2]); c Integer.parseInt(hikakuStr[2]) Integer.parseInt Integer hikakuStr[2] hikakuStr 2 int count = 0; count 0 for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		} int i = a; int i = a; i a i <= b i b i++ i++ i {
			if (c % i == 0) {
				count++;
			}
		} {
			if (c % i == 0) {
				count++;
			}
		} if (c % i == 0) {
				count++;
			} c % i == 0 c % i c i 0 {
				count++;
			} count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		String[] hikakuStr = line.split("[\\s]+");

		int a = Integer.parseInt(hikakuStr[0]);
		int b = Integer.parseInt(hikakuStr[1]);
		int c = Integer.parseInt(hikakuStr[2]);
		int count = 0;
		// TODO ?????????????????????????????????????????????
		for (int i = a; i <= b; i++) {
			if (c % i == 0) {
				count++;
			}
		}
		System.out.println(count);
	}
}