Least Common Multiple of 28, 80, 640

Q: How to Find the LCM of 28, 80, 640 ?

Least Common Multiple of 28, 80, 640 = 4480 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(28, 80, 640) = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 = 4480.

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 28, 80, 640 i.e. 4480 smallest integer divisible by all numbers.

Least common multiple (LCM) of 28, 80, 640 is 4480.

LCM(28, 80, 640) = 4480

LCM of 28, 80, 640

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

Least Common Multiple of 28, 80, 640 by common division method
Least Common Multiple of 28, 80, 640 with GCF Formula

Least Common Multiple of 28,80,640

Least Common Multiple (LCM) of 28,80,640 is 4480

2	28, 80, 640
2	14, 40, 320
2	7, 20, 160
2	7, 10, 80
5	7, 5, 40
	7, 1, 8

∴ So the LCM of the given numbers is 2 x 2 x 2 x 2 x 5 x 7 x 1 x 8 = 4480

Least Common Multiple of 28,80,640 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 28,80,640 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(28,80,640) = 4

common factors(in case of two or more numbers have common factors) = 80

GCF(28,80,640) x common factors =4 x 80 = 320

LCM(28,80,640) = ( 28 × 80 × 640 ) / 320

LCM(28,80,640) = 1433600 / 320

LCM(28,80,640) = 4480

∴ Least Common Multiple of 28,80,640 is 4480

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 28, 80, 640

1. What is the LCM of 28, 80, 640?

Answer: LCM of 28, 80, 640 is 4480.

2. What are the Factors of 4480?

Answer: Factors of 4480 are . There are integers that are factors of 4480

3. How to Find the LCM of 28, 80, 640 ?

Least Common Multiple of 28, 80, 640.

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(28, 80, 640) = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 = 4480.