from math import sqrt

number = int(input())

numberOfPrimeDivisors = 0
number_sqrt = sqrt(number)
divisor = 2

while divisor <= number_sqrt:

    while number % divisor == 0:

        numberOfPrimeDivisors += 1
        number //= divisor
    
    divisor += 1

if number != 1:
    numberOfPrimeDivisors += 1

print( numberOfPrimeDivisors + 1 )