Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 228 and 231 the smallest integer that is 17556 that is divisible by both numbers.
Least Common Multiple (LCM) of 228 and 231 is 17556.
LCM(228,231) = 17556
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 228 and 231. First we will calculate the prime factors of 228 and 231.
Prime Factorization of 228
2 | 228 |
2 | 114 |
3 | 57 |
19 | 19 |
1 |
Prime factors of 228 are 2, 3,19. Prime factorization of 228 in exponential form is:
228 = 22×31×191
Prime Factorization of 231
3 | 231 |
7 | 77 |
11 | 11 |
1 |
Prime factors of 231 are 3, 7,11. Prime factorization of 231 in exponential form is:
231 = 31×71×111
Now multiplying the highest exponent prime factors to calculate the LCM of 228 and 231.
LCM(228,231) = 22×31×71×111×191
LCM(228,231) = 17556
Factors of 228
List of positive integer factors of 228 that divides 228 without a remainder.
1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
Factors of 231
List of positive integer factors of 231 that divides 231 without a remainder.
1, 3, 7, 11, 21, 33, 77, 231
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 228 and 231, than apply into the LCM equation.
GCF(228,231) = 3
LCM(228,231) = ( 228 × 231) / 3
LCM(228,231) = 52668 / 3
LCM(228,231) = 17556
(i) The LCM of 231 and 228 is associative
LCM of 228 and 231 = LCM of 231 and 228
1. What is the LCM of 228 and 231?
Answer: LCM of 228 and 231 is 17556.
2. What are the Factors of 228?
Answer: Factors of 228 are 1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228. There are 12 integers that are factors of 228. The greatest factor of 228 is 228.
3. What are the Factors of 231?
Answer: Factors of 231 are 1, 3, 7, 11, 21, 33, 77, 231. There are 8 integers that are factors of 231. The greatest factor of 231 is 231.
4. How to Find the LCM of 228 and 231?
Answer:
Least Common Multiple of 228 and 231 = 17556
Step 1: Find the prime factorization of 228
228 = 2 x 2 x 3 x 19
Step 2: Find the prime factorization of 231
231 = 3 x 7 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 17556 = 2 x 2 x 3 x 7 x 11 x 19
Step 4: Therefore, the least common multiple of 228 and 231 is 17556.