Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7218 and 7224 the smallest integer that is 8690472 that is divisible by both numbers.
Least Common Multiple (LCM) of 7218 and 7224 is 8690472.
LCM(7218,7224) = 8690472
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 7218 and 7224. First we will calculate the prime factors of 7218 and 7224.
Prime Factorization of 7218
2 | 7218 |
3 | 3609 |
3 | 1203 |
401 | 401 |
1 |
Prime factors of 7218 are 2, 3,401. Prime factorization of 7218 in exponential form is:
7218 = 21×32×4011
Prime Factorization of 7224
2 | 7224 |
2 | 3612 |
2 | 1806 |
3 | 903 |
7 | 301 |
43 | 43 |
1 |
Prime factors of 7224 are 2, 3, 7,43. Prime factorization of 7224 in exponential form is:
7224 = 23×31×71×431
Now multiplying the highest exponent prime factors to calculate the LCM of 7218 and 7224.
LCM(7218,7224) = 23×32×71×431×4011
LCM(7218,7224) = 8690472
Factors of 7218
List of positive integer factors of 7218 that divides 7218 without a remainder.
1, 2, 3, 6, 9, 18, 401, 802, 1203, 2406, 3609, 7218
Factors of 7224
List of positive integer factors of 7224 that divides 7224 without a remainder.
1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 56, 84, 86, 129, 168, 172, 258, 301, 344, 516, 602, 903, 1032, 1204, 1806, 2408, 3612, 7224
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7218 and 7224, than apply into the LCM equation.
GCF(7218,7224) = 6
LCM(7218,7224) = ( 7218 × 7224) / 6
LCM(7218,7224) = 52142832 / 6
LCM(7218,7224) = 8690472
(i) The LCM of 7224 and 7218 is associative
LCM of 7218 and 7224 = LCM of 7224 and 7218
1. What is the LCM of 7218 and 7224?
Answer: LCM of 7218 and 7224 is 8690472.
2. What are the Factors of 7218?
Answer: Factors of 7218 are 1, 2, 3, 6, 9, 18, 401, 802, 1203, 2406, 3609, 7218. There are 12 integers that are factors of 7218. The greatest factor of 7218 is 7218.
3. What are the Factors of 7224?
Answer: Factors of 7224 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 56, 84, 86, 129, 168, 172, 258, 301, 344, 516, 602, 903, 1032, 1204, 1806, 2408, 3612, 7224. There are 32 integers that are factors of 7224. The greatest factor of 7224 is 7224.
4. How to Find the LCM of 7218 and 7224?
Answer:
Least Common Multiple of 7218 and 7224 = 8690472
Step 1: Find the prime factorization of 7218
7218 = 2 x 3 x 3 x 401
Step 2: Find the prime factorization of 7224
7224 = 2 x 2 x 2 x 3 x 7 x 43
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 8690472 = 2 x 2 x 2 x 3 x 3 x 7 x 43 x 401
Step 4: Therefore, the least common multiple of 7218 and 7224 is 8690472.