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 20384 the smallest integer that is 103856480 that is divisible by both numbers.
Least Common Multiple (LCM) of 20380 and 20384 is 103856480.
LCM(20380,20384) = 103856480
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 20384. First we will calculate the prime factors of 20380 and 20384.
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 20384
2 | 20384 |
2 | 10192 |
2 | 5096 |
2 | 2548 |
2 | 1274 |
7 | 637 |
7 | 91 |
13 | 13 |
1 |
Prime factors of 20384 are 2, 7,13. Prime factorization of 20384 in exponential form is:
20384 = 25×72×131
Now multiplying the highest exponent prime factors to calculate the LCM of 20380 and 20384.
LCM(20380,20384) = 25×51×72×131×10191
LCM(20380,20384) = 103856480
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 20384
List of positive integer factors of 20384 that divides 20384 without a remainder.
1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 637, 728, 784, 1274, 1456, 1568, 2548, 2912, 5096, 10192, 20384
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20380 and 20384, than apply into the LCM equation.
GCF(20380,20384) = 4
LCM(20380,20384) = ( 20380 × 20384) / 4
LCM(20380,20384) = 415425920 / 4
LCM(20380,20384) = 103856480
(i) The LCM of 20384 and 20380 is associative
LCM of 20380 and 20384 = LCM of 20384 and 20380
1. What is the LCM of 20380 and 20384?
Answer: LCM of 20380 and 20384 is 103856480.
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 20384?
Answer: Factors of 20384 are 1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 637, 728, 784, 1274, 1456, 1568, 2548, 2912, 5096, 10192, 20384. There are 36 integers that are factors of 20384. The greatest factor of 20384 is 20384.
4. How to Find the LCM of 20380 and 20384?
Answer:
Least Common Multiple of 20380 and 20384 = 103856480
Step 1: Find the prime factorization of 20380
20380 = 2 x 2 x 5 x 1019
Step 2: Find the prime factorization of 20384
20384 = 2 x 2 x 2 x 2 x 2 x 7 x 7 x 13
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 103856480 = 2 x 2 x 2 x 2 x 2 x 5 x 7 x 7 x 13 x 1019
Step 4: Therefore, the least common multiple of 20380 and 20384 is 103856480.