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 735 the smallest integer that is 178605 that is divisible by both numbers.
Least Common Multiple (LCM) of 729 and 735 is 178605.
LCM(729,735) = 178605
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 735. First we will calculate the prime factors of 729 and 735.
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 735
3 | 735 |
5 | 245 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 735 are 3, 5,7. Prime factorization of 735 in exponential form is:
735 = 31×51×72
Now multiplying the highest exponent prime factors to calculate the LCM of 729 and 735.
LCM(729,735) = 36×51×72
LCM(729,735) = 178605
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 735
List of positive integer factors of 735 that divides 735 without a remainder.
1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 729 and 735, than apply into the LCM equation.
GCF(729,735) = 3
LCM(729,735) = ( 729 × 735) / 3
LCM(729,735) = 535815 / 3
LCM(729,735) = 178605
(i) The LCM of 735 and 729 is associative
LCM of 729 and 735 = LCM of 735 and 729
1. What is the LCM of 729 and 735?
Answer: LCM of 729 and 735 is 178605.
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 735?
Answer: Factors of 735 are 1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735. There are 12 integers that are factors of 735. The greatest factor of 735 is 735.
4. How to Find the LCM of 729 and 735?
Answer:
Least Common Multiple of 729 and 735 = 178605
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 735
735 = 3 x 5 x 7 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 178605 = 3 x 3 x 3 x 3 x 3 x 3 x 5 x 7 x 7
Step 4: Therefore, the least common multiple of 729 and 735 is 178605.