Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 10240 and 10245 the smallest integer that is 20981760 that is divisible by both numbers.
Least Common Multiple (LCM) of 10240 and 10245 is 20981760.
LCM(10240,10245) = 20981760
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 10240 and 10245. First we will calculate the prime factors of 10240 and 10245.
Prime Factorization of 10240
2 | 10240 |
2 | 5120 |
2 | 2560 |
2 | 1280 |
2 | 640 |
2 | 320 |
2 | 160 |
2 | 80 |
2 | 40 |
2 | 20 |
2 | 10 |
5 | 5 |
1 |
Prime factors of 10240 are 2,5. Prime factorization of 10240 in exponential form is:
10240 = 211×51
Prime Factorization of 10245
3 | 10245 |
5 | 3415 |
683 | 683 |
1 |
Prime factors of 10245 are 3, 5,683. Prime factorization of 10245 in exponential form is:
10245 = 31×51×6831
Now multiplying the highest exponent prime factors to calculate the LCM of 10240 and 10245.
LCM(10240,10245) = 211×31×51×6831
LCM(10240,10245) = 20981760
Factors of 10240
List of positive integer factors of 10240 that divides 10240 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240
Factors of 10245
List of positive integer factors of 10245 that divides 10245 without a remainder.
1, 3, 5, 15, 683, 2049, 3415, 10245
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10240 and 10245, than apply into the LCM equation.
GCF(10240,10245) = 5
LCM(10240,10245) = ( 10240 × 10245) / 5
LCM(10240,10245) = 104908800 / 5
LCM(10240,10245) = 20981760
(i) The LCM of 10245 and 10240 is associative
LCM of 10240 and 10245 = LCM of 10245 and 10240
1. What is the LCM of 10240 and 10245?
Answer: LCM of 10240 and 10245 is 20981760.
2. What are the Factors of 10240?
Answer: Factors of 10240 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240. There are 24 integers that are factors of 10240. The greatest factor of 10240 is 10240.
3. What are the Factors of 10245?
Answer: Factors of 10245 are 1, 3, 5, 15, 683, 2049, 3415, 10245. There are 8 integers that are factors of 10245. The greatest factor of 10245 is 10245.
4. How to Find the LCM of 10240 and 10245?
Answer:
Least Common Multiple of 10240 and 10245 = 20981760
Step 1: Find the prime factorization of 10240
10240 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5
Step 2: Find the prime factorization of 10245
10245 = 3 x 5 x 683
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 20981760 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 683
Step 4: Therefore, the least common multiple of 10240 and 10245 is 20981760.