LCM for 36 and 81

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What's the Least Common Multiple (LCM) of 36 and 81?

Answer

LCM of 36 and 81 is
324

(Three hundred twenty-four)

Finding LCM for 36 and 81 using GCF of these numbers

The first method to find LCM for numbers 36 and 81 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 36 and 81 is 9, so

LCM = (36 × 81) ÷ 9

LCM = 2,916 ÷ 9

LCM = 324

Finding LCM for 36 and 81 by Listing Multiples

The second method to find LCM for numbers 36 and 81 is to list out the common multiples for both numbers and pick the first one that matches:

Multiples of 36: 36, 72, 108, 144, 180, 216, 252, 288, 324, 360, 396

Multiples of 81: 81, 162, 243, 324, 405, 486

So the LCM for 36 and 81 is 324

Finding LCM for 36 and 81 by Prime Factorization

Another method to find LCM for numbers 36 and 81 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 36: 2, 2, 3, 3 (exponent form: 22, 32)

All Prime Factors of 81: 3, 3, 3, 3 (exponent form: 34)

22 × 34 = 324

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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 36 and 81? (The answer is: 324). Select the first number (e.g. '36') and the second number (e.g. '81'). 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
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LCM Table

Number 1Number 2LCM
36336
361836
362472
3627108
3628252
3640360
3642252
36431,548
3644396
3645180
3646828
3648144
36491,764
3651612
3652468
36531,908
3654108
3656504
36581,044
3660180
3664576
3680720
3681324
3684252
3690180
361121,008
36120360
36144144

FAQ

What's the Least Common Multiple (LCM) of 36 and 81?

LCM of 36 and 81 is 324

How to find the LCM of 36 and 81 using prime factorization?

To find the LCM of 36 and 81, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 324.

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 36 and 81: LCM = 324, GCF = 9.

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