import math
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

n = I()

ans = 0
for i in range(1, int(n**0.5)+1):
    if n%i == 0 and i < n//i:
        ans += 2
    elif n%i == 0 and i == n//i:
        ans += 1

print(ans)