Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1782 and 1788 the smallest integer that is 531036 that is divisible by both numbers.
Least Common Multiple (LCM) of 1782 and 1788 is 531036.
LCM(1782,1788) = 531036
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 1782 and 1788. First we will calculate the prime factors of 1782 and 1788.
Prime Factorization of 1782
2 | 1782 |
3 | 891 |
3 | 297 |
3 | 99 |
3 | 33 |
11 | 11 |
1 |
Prime factors of 1782 are 2, 3,11. Prime factorization of 1782 in exponential form is:
1782 = 21×34×111
Prime Factorization of 1788
2 | 1788 |
2 | 894 |
3 | 447 |
149 | 149 |
1 |
Prime factors of 1788 are 2, 3,149. Prime factorization of 1788 in exponential form is:
1788 = 22×31×1491
Now multiplying the highest exponent prime factors to calculate the LCM of 1782 and 1788.
LCM(1782,1788) = 22×34×111×1491
LCM(1782,1788) = 531036
Factors of 1782
List of positive integer factors of 1782 that divides 1782 without a remainder.
1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 81, 99, 162, 198, 297, 594, 891, 1782
Factors of 1788
List of positive integer factors of 1788 that divides 1788 without a remainder.
1, 2, 3, 4, 6, 12, 149, 298, 447, 596, 894, 1788
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1782 and 1788, than apply into the LCM equation.
GCF(1782,1788) = 6
LCM(1782,1788) = ( 1782 × 1788) / 6
LCM(1782,1788) = 3186216 / 6
LCM(1782,1788) = 531036
(i) The LCM of 1788 and 1782 is associative
LCM of 1782 and 1788 = LCM of 1788 and 1782
1. What is the LCM of 1782 and 1788?
Answer: LCM of 1782 and 1788 is 531036.
2. What are the Factors of 1782?
Answer: Factors of 1782 are 1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 81, 99, 162, 198, 297, 594, 891, 1782. There are 20 integers that are factors of 1782. The greatest factor of 1782 is 1782.
3. What are the Factors of 1788?
Answer: Factors of 1788 are 1, 2, 3, 4, 6, 12, 149, 298, 447, 596, 894, 1788. There are 12 integers that are factors of 1788. The greatest factor of 1788 is 1788.
4. How to Find the LCM of 1782 and 1788?
Answer:
Least Common Multiple of 1782 and 1788 = 531036
Step 1: Find the prime factorization of 1782
1782 = 2 x 3 x 3 x 3 x 3 x 11
Step 2: Find the prime factorization of 1788
1788 = 2 x 2 x 3 x 149
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 531036 = 2 x 2 x 3 x 3 x 3 x 3 x 11 x 149
Step 4: Therefore, the least common multiple of 1782 and 1788 is 531036.