Python3 代码

while True:
    s = input()
    if s == ".":
        break

    n = len(s)
    for i in range (n):
        if n % (i+1) == 0:
            sub = s[:i+1]

            c = n // (i+1)
            sp = ""
            for j in range (c):
                sp += sub
                j += 1

            if s == sp:
                print (c)
                break