Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1855 and 1862 the smallest integer that is 493430 that is divisible by both numbers.
Least Common Multiple (LCM) of 1855 and 1862 is 493430.
LCM(1855,1862) = 493430
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 1855 and 1862. First we will calculate the prime factors of 1855 and 1862.
Prime Factorization of 1855
5 | 1855 |
7 | 371 |
53 | 53 |
1 |
Prime factors of 1855 are 5, 7,53. Prime factorization of 1855 in exponential form is:
1855 = 51×71×531
Prime Factorization of 1862
2 | 1862 |
7 | 931 |
7 | 133 |
19 | 19 |
1 |
Prime factors of 1862 are 2, 7,19. Prime factorization of 1862 in exponential form is:
1862 = 21×72×191
Now multiplying the highest exponent prime factors to calculate the LCM of 1855 and 1862.
LCM(1855,1862) = 21×51×72×191×531
LCM(1855,1862) = 493430
Factors of 1855
List of positive integer factors of 1855 that divides 1855 without a remainder.
1, 5, 7, 35, 53, 265, 371, 1855
Factors of 1862
List of positive integer factors of 1862 that divides 1862 without a remainder.
1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1855 and 1862, than apply into the LCM equation.
GCF(1855,1862) = 7
LCM(1855,1862) = ( 1855 × 1862) / 7
LCM(1855,1862) = 3454010 / 7
LCM(1855,1862) = 493430
(i) The LCM of 1862 and 1855 is associative
LCM of 1855 and 1862 = LCM of 1862 and 1855
1. What is the LCM of 1855 and 1862?
Answer: LCM of 1855 and 1862 is 493430.
2. What are the Factors of 1855?
Answer: Factors of 1855 are 1, 5, 7, 35, 53, 265, 371, 1855. There are 8 integers that are factors of 1855. The greatest factor of 1855 is 1855.
3. What are the Factors of 1862?
Answer: Factors of 1862 are 1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862. There are 12 integers that are factors of 1862. The greatest factor of 1862 is 1862.
4. How to Find the LCM of 1855 and 1862?
Answer:
Least Common Multiple of 1855 and 1862 = 493430
Step 1: Find the prime factorization of 1855
1855 = 5 x 7 x 53
Step 2: Find the prime factorization of 1862
1862 = 2 x 7 x 7 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 493430 = 2 x 5 x 7 x 7 x 19 x 53
Step 4: Therefore, the least common multiple of 1855 and 1862 is 493430.