Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1578 and 1585 the smallest integer that is 2501130 that is divisible by both numbers.
Least Common Multiple (LCM) of 1578 and 1585 is 2501130.
LCM(1578,1585) = 2501130
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 1578 and 1585. First we will calculate the prime factors of 1578 and 1585.
Prime Factorization of 1578
2 | 1578 |
3 | 789 |
263 | 263 |
1 |
Prime factors of 1578 are 2, 3,263. Prime factorization of 1578 in exponential form is:
1578 = 21×31×2631
Prime Factorization of 1585
5 | 1585 |
317 | 317 |
1 |
Prime factors of 1585 are 5,317. Prime factorization of 1585 in exponential form is:
1585 = 51×3171
Now multiplying the highest exponent prime factors to calculate the LCM of 1578 and 1585.
LCM(1578,1585) = 21×31×51×2631×3171
LCM(1578,1585) = 2501130
Factors of 1578
List of positive integer factors of 1578 that divides 1578 without a remainder.
1, 2, 3, 6, 263, 526, 789, 1578
Factors of 1585
List of positive integer factors of 1585 that divides 1585 without a remainder.
1, 5, 317, 1585
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1578 and 1585, than apply into the LCM equation.
GCF(1578,1585) = 1
LCM(1578,1585) = ( 1578 × 1585) / 1
LCM(1578,1585) = 2501130 / 1
LCM(1578,1585) = 2501130
(i) The LCM of 1585 and 1578 is associative
LCM of 1578 and 1585 = LCM of 1585 and 1578
1. What is the LCM of 1578 and 1585?
Answer: LCM of 1578 and 1585 is 2501130.
2. What are the Factors of 1578?
Answer: Factors of 1578 are 1, 2, 3, 6, 263, 526, 789, 1578. There are 8 integers that are factors of 1578. The greatest factor of 1578 is 1578.
3. What are the Factors of 1585?
Answer: Factors of 1585 are 1, 5, 317, 1585. There are 4 integers that are factors of 1585. The greatest factor of 1585 is 1585.
4. How to Find the LCM of 1578 and 1585?
Answer:
Least Common Multiple of 1578 and 1585 = 2501130
Step 1: Find the prime factorization of 1578
1578 = 2 x 3 x 263
Step 2: Find the prime factorization of 1585
1585 = 5 x 317
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2501130 = 2 x 3 x 5 x 263 x 317
Step 4: Therefore, the least common multiple of 1578 and 1585 is 2501130.