Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1802 and 1805 the smallest integer that is 3252610 that is divisible by both numbers.
Least Common Multiple (LCM) of 1802 and 1805 is 3252610.
LCM(1802,1805) = 3252610
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 1802 and 1805. First we will calculate the prime factors of 1802 and 1805.
Prime Factorization of 1802
2 | 1802 |
17 | 901 |
53 | 53 |
1 |
Prime factors of 1802 are 2, 17,53. Prime factorization of 1802 in exponential form is:
1802 = 21×171×531
Prime Factorization of 1805
5 | 1805 |
19 | 361 |
19 | 19 |
1 |
Prime factors of 1805 are 5,19. Prime factorization of 1805 in exponential form is:
1805 = 51×192
Now multiplying the highest exponent prime factors to calculate the LCM of 1802 and 1805.
LCM(1802,1805) = 21×51×171×192×531
LCM(1802,1805) = 3252610
Factors of 1802
List of positive integer factors of 1802 that divides 1802 without a remainder.
1, 2, 17, 34, 53, 106, 901, 1802
Factors of 1805
List of positive integer factors of 1805 that divides 1805 without a remainder.
1, 5, 19, 95, 361, 1805
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1802 and 1805, than apply into the LCM equation.
GCF(1802,1805) = 1
LCM(1802,1805) = ( 1802 × 1805) / 1
LCM(1802,1805) = 3252610 / 1
LCM(1802,1805) = 3252610
(i) The LCM of 1805 and 1802 is associative
LCM of 1802 and 1805 = LCM of 1805 and 1802
1. What is the LCM of 1802 and 1805?
Answer: LCM of 1802 and 1805 is 3252610.
2. What are the Factors of 1802?
Answer: Factors of 1802 are 1, 2, 17, 34, 53, 106, 901, 1802. There are 8 integers that are factors of 1802. The greatest factor of 1802 is 1802.
3. What are the Factors of 1805?
Answer: Factors of 1805 are 1, 5, 19, 95, 361, 1805. There are 6 integers that are factors of 1805. The greatest factor of 1805 is 1805.
4. How to Find the LCM of 1802 and 1805?
Answer:
Least Common Multiple of 1802 and 1805 = 3252610
Step 1: Find the prime factorization of 1802
1802 = 2 x 17 x 53
Step 2: Find the prime factorization of 1805
1805 = 5 x 19 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 = 3252610 = 2 x 5 x 17 x 19 x 19 x 53
Step 4: Therefore, the least common multiple of 1802 and 1805 is 3252610.