LCM for 220 and 420

"Least Common Multiple" Calculator

Least Common Multiple of

and

What's the Least Common Multiple (LCM) of 220 and 420?

Answer

LCM of 220 and 420 is 4,620

(Four thousand, six hundred twenty)

Finding LCM for 220 and 420 using GCF of these numbers

The first method to find LCM for numbers 220 and 420 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 220 and 420 is 20, so

LCM = (220 × 420) ÷ 20

LCM = 92400 ÷ 20

LCM = 4620

Finding LCM for 220 and 420 by Listing Multiples

The second method to find LCM for numbers 220 and 420 is to list out the common multiples for both numbers and pick the first one that matches:

Multiples of 220: 220, 440, 660, 880, 1100, 1320, 1540, 1760, 1980, 2200, 2420, 2640, 2860, 3080, 3300, 3520, 3740, 3960, 4180, 4400, 4620, 4840, 5060

Multiples of 420: 420, 840, 1260, 1680, 2100, 2520, 2940, 3360, 3780, 4200, 4620, 5040, 5460

So the LCM for 220 and 420 is 4620

Finding LCM for 220 and 420 by Prime Factorization

Another method to find LCM for numbers 220 and 420 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 220: 2, 2, 5, 11 (exponent form: 22, 51, 111)

All Prime Factors of 420: 2, 2, 3, 5, 7 (exponent form: 22, 31, 51, 71)

22 × 51 × 111 × 31 × 71 = 4620

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About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 220 and 420? (The answer is: 4620). Select the first number (e.g. '220') and the second number (e.g. '420'). After that hit the 'Calculate' button.
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers

"Least Common Multiple" Calculator

Least Common Multiple of

and

LCM Table

Number 1Number 2LCM
22040517820
22040644660
2204078140
22040822440
22040989980
2204109020
22041190420
22041222660
22041390860
22041445540
22041518260
22041622880
22041791740
2204184180
22041992180
2204204620
22042192620
22042246420
22042393060
22042423320
22042518700
22042646860
22042793940
22042823540
2204298580
2204309460
22043194820
22043223760
22043395260
22043447740

FAQ

What's the Least Common Multiple (LCM) of 220 and 420?

LCM of 220 and 420 is 4,620

How to find the LCM of 220 and 420 using prime factorization?

To find the LCM of 220 and 420, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 4,620.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 220 and 420: LCM = 4,620, GCF = 20.

See Also