n = int(input())
limit = int(n**(1/2))
numbers = []

for i in range(1, limit + 1):
    if i in numbers:
        break
    elif n%i == 0:
        numbers.append(i)
        numbers.append(n//i)

if limit**2 == n:
    print(len(numbers) - 1)
else:
    print(len(numbers))