Least Common Multiple of 21, 90, 81, 448

Q: How to Find the LCM of 21, 90, 81, 448 ?

Least Common Multiple of 21, 90, 81, 448 = 181440 Step 1: Divide all the numbers with common prime numbers having remainder zero. Step 2: Then multiply all the prime factors with last row quotient of common division that is LCM(21, 90, 81, 448) = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 7 = 181440.

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Use the LCM of two or more numbers Calculator to find the Least Common Multiple of numbers 21, 90, 81, 448 i.e. 181440 smallest integer divisible by all numbers.

Least common multiple (LCM) of 21, 90, 81, 448 is 181440.

LCM(21, 90, 81, 448) = 181440

LCM of 21, 90, 81, 448

Least common multiple or lowest common denominator (lcd) can be calculated in three ways

Least Common Multiple of 21, 90, 81, 448 by common division method
Least Common Multiple of 21, 90, 81, 448 with GCF Formula

Least Common Multiple of 21,90,81,448

Least Common Multiple (LCM) of 21,90,81,448 is 181440

2	21, 90, 81, 448
3	21, 45, 81, 224
3	7, 15, 27, 224
7	7, 5, 9, 224
	1, 5, 9, 32

∴ So the LCM of the given numbers is 2 x 3 x 3 x 7 x 1 x 5 x 9 x 32 = 181440

Least Common Multiple of 21,90,81,448 with GCF Formula

The formula of LCM is LCM(a₁,a₂,a₃....,a_n) = ( a₁ × a₂ × a₃ × .... × a_n) / GCF(a₁,a₂,a₃....,a_n) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 21,90,81,448 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,90,81,448) = 1

common factors(in case of two or more numbers have common factors) = 378

GCF(21,90,81,448) x common factors =1 x 378 = 378

LCM(21,90,81,448) = ( 21 × 90 × 81 × 448 ) / 378

LCM(21,90,81,448) = 68584320 / 378

LCM(21,90,81,448) = 181440

∴ Least Common Multiple of 21,90,81,448 is 181440

LCM of two or more Numbers Calculation Examples

Here are some samples of LCM of two or more Numbers calculations.

Frequently Asked Questions on LCM of 21, 90, 81, 448

1. What is the LCM of 21, 90, 81, 448?

Answer: LCM of 21, 90, 81, 448 is 181440.

2. What are the Factors of 181440?

Answer: Factors of 181440 are . There are integers that are factors of 181440

3. How to Find the LCM of 21, 90, 81, 448 ?

Least Common Multiple of 21, 90, 81, 448.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCM(21, 90, 81, 448) = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 7 = 181440.