Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 729 and 730 the smallest integer that is 532170 that is divisible by both numbers.
Least Common Multiple (LCM) of 729 and 730 is 532170.
LCM(729,730) = 532170
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 729 and 730. First we will calculate the prime factors of 729 and 730.
Prime Factorization of 729
3 | 729 |
3 | 243 |
3 | 81 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 729 are 3. Prime factorization of 729 in exponential form is:
729 = 36
Prime Factorization of 730
2 | 730 |
5 | 365 |
73 | 73 |
1 |
Prime factors of 730 are 2, 5,73. Prime factorization of 730 in exponential form is:
730 = 21×51×731
Now multiplying the highest exponent prime factors to calculate the LCM of 729 and 730.
LCM(729,730) = 21×36×51×731
LCM(729,730) = 532170
Factors of 729
List of positive integer factors of 729 that divides 729 without a remainder.
1, 3, 9, 27, 81, 243, 729
Factors of 730
List of positive integer factors of 730 that divides 730 without a remainder.
1, 2, 5, 10, 73, 146, 365, 730
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 729 and 730, than apply into the LCM equation.
GCF(729,730) = 1
LCM(729,730) = ( 729 × 730) / 1
LCM(729,730) = 532170 / 1
LCM(729,730) = 532170
(i) The LCM of 730 and 729 is associative
LCM of 729 and 730 = LCM of 730 and 729
1. What is the LCM of 729 and 730?
Answer: LCM of 729 and 730 is 532170.
2. What are the Factors of 729?
Answer: Factors of 729 are 1, 3, 9, 27, 81, 243, 729. There are 7 integers that are factors of 729. The greatest factor of 729 is 729.
3. What are the Factors of 730?
Answer: Factors of 730 are 1, 2, 5, 10, 73, 146, 365, 730. There are 8 integers that are factors of 730. The greatest factor of 730 is 730.
4. How to Find the LCM of 729 and 730?
Answer:
Least Common Multiple of 729 and 730 = 532170
Step 1: Find the prime factorization of 729
729 = 3 x 3 x 3 x 3 x 3 x 3
Step 2: Find the prime factorization of 730
730 = 2 x 5 x 73
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 532170 = 2 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 73
Step 4: Therefore, the least common multiple of 729 and 730 is 532170.