#include<stdio.h>
int main()
{
	int length,width, A, residue;
	int C = 0;
	printf("请输入长方形的面积A:");
	scanf("%d", &A);
	if (A >= 2 && A <= 1000)
	{
		for (length = 1;length<= A;length++)
		{
			residue = A % length;
			width = A / length;
			if (width < length)
			{
				break;
			}
			if (residue == 0)
			{
				C++;
			}
		}
	}
	printf("%d", C);
	return 0;
}