def pick_set(num):
    mul_sets = []
    for i in range(1,num+1):
        if num%i == 0:
            mul_sets.append([int(num/i),i])
        else:
            continue
    return mul_sets

def main():
    num = int(input())
    mul_sets = pick_set(num)
    print(len(mul_sets))

if __name__ == '__main__':
    main()