Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 726 and 728 the smallest integer that is 264264 that is divisible by both numbers.
Least Common Multiple (LCM) of 726 and 728 is 264264.
LCM(726,728) = 264264
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 726 and 728. First we will calculate the prime factors of 726 and 728.
Prime Factorization of 726
2 | 726 |
3 | 363 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 726 are 2, 3,11. Prime factorization of 726 in exponential form is:
726 = 21×31×112
Prime Factorization of 728
2 | 728 |
2 | 364 |
2 | 182 |
7 | 91 |
13 | 13 |
1 |
Prime factors of 728 are 2, 7,13. Prime factorization of 728 in exponential form is:
728 = 23×71×131
Now multiplying the highest exponent prime factors to calculate the LCM of 726 and 728.
LCM(726,728) = 23×31×71×112×131
LCM(726,728) = 264264
Factors of 726
List of positive integer factors of 726 that divides 726 without a remainder.
1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726
Factors of 728
List of positive integer factors of 728 that divides 728 without a remainder.
1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 726 and 728, than apply into the LCM equation.
GCF(726,728) = 2
LCM(726,728) = ( 726 × 728) / 2
LCM(726,728) = 528528 / 2
LCM(726,728) = 264264
(i) The LCM of 728 and 726 is associative
LCM of 726 and 728 = LCM of 728 and 726
1. What is the LCM of 726 and 728?
Answer: LCM of 726 and 728 is 264264.
2. What are the Factors of 726?
Answer: Factors of 726 are 1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726. There are 12 integers that are factors of 726. The greatest factor of 726 is 726.
3. What are the Factors of 728?
Answer: Factors of 728 are 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728. There are 16 integers that are factors of 728. The greatest factor of 728 is 728.
4. How to Find the LCM of 726 and 728?
Answer:
Least Common Multiple of 726 and 728 = 264264
Step 1: Find the prime factorization of 726
726 = 2 x 3 x 11 x 11
Step 2: Find the prime factorization of 728
728 = 2 x 2 x 2 x 7 x 13
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 264264 = 2 x 2 x 2 x 3 x 7 x 11 x 11 x 13
Step 4: Therefore, the least common multiple of 726 and 728 is 264264.