Python で実装された最小公倍数アルゴリズムの例

#!/usr/bin/python
from collections import Counter
def PrimeNum(num):
   r_value =[]
   for i in range(2,num+1):
      for j in range(2,i):
         if i % j == 0:
            break
      else:
         r_value.append(i)
   return r_value
def PrimeFactorSolve(num,prime_list):
   for n in prime_list:
      if num % n == 0:
         return [n,num / n]
def Primepisor(num):
   num_temp =num
   prime_range= PrimeNum(num)
   ret_value =[]
   while num not in prime_range:
      factor_list= PrimeFactorSolve(num,prime_range)
      ret_value.append(factor_list[0])
      num =factor_list[1]
   else:
      ret_value.append(num)
   return Counter(ret_value)
def LeastCommonMultiple(num1,num2):
   dict1 =Primepisor(num1)
   dict2 =Primepisor(num2)
   least_common_multiple= 1
   for key in dict1:
      if key in dict2:
         if dict1[key] > dict2[key]:
            least_common_multiple*= (key ** dict1[key])
         else:
            least_common_multiple*= (key ** dict2[key])
   for key in dict1:
      if key not in dict2:
         least_common_multiple*= (key ** dict1[key])
   for key in dict2:
      if key not in dict1:
         least_common_multiple*= (key ** dict2[key])
   return least_common_multiple
print(LeastCommonMultiple(12,18))
print(LeastCommonMultiple(7,2))
print(LeastCommonMultiple(7,13))
print(LeastCommonMultiple(24,56))
print(LeastCommonMultiple(63,81))