# -*- coding: utf-8 -*-

'''
64//2 = 32などのケースが引っ掛け
'''

N = int(input())

i = 1
ans = 0
while i*i<=N:
    if N%i==0:
        q = N//i
        id_1 = str(i) + str(q)
        id_2 = str(q) + str(i)
        ans += 1 if id_1==id_2 else 2
    i += 1

print(ans)