n=int(input())
j=2
s=1
while j*j<=n:
	if n%j==0:
		c=0
		while n%j==0:
			n//=j
			c+=1
		s*=((j**(c+1))-1)//(j-1)
	j+=1
if n>1:
	s*=(n+1)
print(c)