Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 224 and 231 the smallest integer that is 7392 that is divisible by both numbers.
Least Common Multiple (LCM) of 224 and 231 is 7392.
LCM(224,231) = 7392
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 224 and 231. First we will calculate the prime factors of 224 and 231.
Prime Factorization of 224
2 | 224 |
2 | 112 |
2 | 56 |
2 | 28 |
2 | 14 |
7 | 7 |
1 |
Prime factors of 224 are 2,7. Prime factorization of 224 in exponential form is:
224 = 25×71
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 224 and 231.
LCM(224,231) = 25×31×71×111
LCM(224,231) = 7392
Factors of 224
List of positive integer factors of 224 that divides 224 without a remainder.
1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224
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 224 and 231, than apply into the LCM equation.
GCF(224,231) = 7
LCM(224,231) = ( 224 × 231) / 7
LCM(224,231) = 51744 / 7
LCM(224,231) = 7392
(i) The LCM of 231 and 224 is associative
LCM of 224 and 231 = LCM of 231 and 224
1. What is the LCM of 224 and 231?
Answer: LCM of 224 and 231 is 7392.
2. What are the Factors of 224?
Answer: Factors of 224 are 1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224. There are 12 integers that are factors of 224. The greatest factor of 224 is 224.
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 224 and 231?
Answer:
Least Common Multiple of 224 and 231 = 7392
Step 1: Find the prime factorization of 224
224 = 2 x 2 x 2 x 2 x 2 x 7
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 = 7392 = 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11
Step 4: Therefore, the least common multiple of 224 and 231 is 7392.