count=0
a=int(input("Input number: "))
if a<2:
    print("Invalid Input")
else:
    for i in range(2,a+1):
        total_of_factors=0
        for j in range(1,i):
            if i%j==0:
                total_of_factors+=j
                if total_of_factors>i:
                    count+=1
    print(count)