N = int(input())
a = 1
sum = 0
b = 0

for i in range(N):
    if N%a == 0:
        if (N//a)*(N//a) == N:
            sum += 1
            b += 1
        else:
            sum += 2
    
    a += 1

sum = (sum - b) // 2 + b
print(sum)