Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 20380 and 20388 the smallest integer that is 103876860 that is divisible by both numbers.
Least Common Multiple (LCM) of 20380 and 20388 is 103876860.
LCM(20380,20388) = 103876860
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 20380 and 20388. First we will calculate the prime factors of 20380 and 20388.
Prime Factorization of 20380
2 | 20380 |
2 | 10190 |
5 | 5095 |
1019 | 1019 |
1 |
Prime factors of 20380 are 2, 5,1019. Prime factorization of 20380 in exponential form is:
20380 = 22×51×10191
Prime Factorization of 20388
2 | 20388 |
2 | 10194 |
3 | 5097 |
1699 | 1699 |
1 |
Prime factors of 20388 are 2, 3,1699. Prime factorization of 20388 in exponential form is:
20388 = 22×31×16991
Now multiplying the highest exponent prime factors to calculate the LCM of 20380 and 20388.
LCM(20380,20388) = 22×31×51×10191×16991
LCM(20380,20388) = 103876860
Factors of 20380
List of positive integer factors of 20380 that divides 20380 without a remainder.
1, 2, 4, 5, 10, 20, 1019, 2038, 4076, 5095, 10190, 20380
Factors of 20388
List of positive integer factors of 20388 that divides 20388 without a remainder.
1, 2, 3, 4, 6, 12, 1699, 3398, 5097, 6796, 10194, 20388
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20380 and 20388, than apply into the LCM equation.
GCF(20380,20388) = 4
LCM(20380,20388) = ( 20380 × 20388) / 4
LCM(20380,20388) = 415507440 / 4
LCM(20380,20388) = 103876860
(i) The LCM of 20388 and 20380 is associative
LCM of 20380 and 20388 = LCM of 20388 and 20380
1. What is the LCM of 20380 and 20388?
Answer: LCM of 20380 and 20388 is 103876860.
2. What are the Factors of 20380?
Answer: Factors of 20380 are 1, 2, 4, 5, 10, 20, 1019, 2038, 4076, 5095, 10190, 20380. There are 12 integers that are factors of 20380. The greatest factor of 20380 is 20380.
3. What are the Factors of 20388?
Answer: Factors of 20388 are 1, 2, 3, 4, 6, 12, 1699, 3398, 5097, 6796, 10194, 20388. There are 12 integers that are factors of 20388. The greatest factor of 20388 is 20388.
4. How to Find the LCM of 20380 and 20388?
Answer:
Least Common Multiple of 20380 and 20388 = 103876860
Step 1: Find the prime factorization of 20380
20380 = 2 x 2 x 5 x 1019
Step 2: Find the prime factorization of 20388
20388 = 2 x 2 x 3 x 1699
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 103876860 = 2 x 2 x 3 x 5 x 1019 x 1699
Step 4: Therefore, the least common multiple of 20380 and 20388 is 103876860.