Python Program to Find the LCM of Array Elements

Python Program to Find the LCM of Array Elements

Python program to find lcm of n numbers or array elements; In this tutorial, you will learn how to find the LCM (lowest common multiple) of the elements of the array or n numbers in python.

LCM is the lowest multiple of two or more numbers. Multiples of a number are those numbers which when divided by the number leave no remainder.

Python Program to Find the LCM of the Array Elements or n Numbers

  • Algorithm to find the LCM of array elements
  • Python program to find lcm of array elements

Algorithm to find the LCM of array elements

  • Import the math module to find the GCD of two numbers using math.gcd() function.
  • At first, find the LCM of initial two numbers using: LCM(a,b) = a*b/GCD(a,b).
  • And, then find the LCM of three numbers with the help of LCM of first two numbers using LCM(ab,c) = lcm(lcm(a1, a2), a3). The same concept we have implemented.

Python program to find lcm of array elements

# Python program to find the LCM of the array elements

# import math module
import math

# function to calculate LCM
def LCMofArray(a):
  lcm = a[0]
  for i in range(1,len(a)):
    lcm = lcm*a[i]//math.gcd(lcm, a[i])
  return lcm

# array of integers
arr1 = [1,2,3,4]
arr2 = [2,3,4,5]
arr3 = [3,4,5,6]
arr4 = [2,4,6,8,10]
arr5 = [8,4,12,40,26,28,30]

print("LCM of arr1 elements:", LCMofArray(arr1))
print("LCM of arr2 elements:", LCMofArray(arr2))
print("LCM of arr3 elements:", LCMofArray(arr3))
print("LCM of arr4 elements:", LCMofArray(arr4))
print("LCM of arr5 elements:", LCMofArray(arr5))


LCM of arr1 elements: 12
LCM of arr2 elements: 60
LCM of arr3 elements: 60
LCM of arr4 elements: 120
LCM of arr5 elements: 10920

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My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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