Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 5645 and 5649 the smallest integer that is 31888605 that is divisible by both numbers.
Least Common Multiple (LCM) of 5645 and 5649 is 31888605.
LCM(5645,5649) = 31888605
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 5645 and 5649. First we will calculate the prime factors of 5645 and 5649.
Prime Factorization of 5645
5 | 5645 |
1129 | 1129 |
1 |
Prime factors of 5645 are 5,1129. Prime factorization of 5645 in exponential form is:
5645 = 51×11291
Prime Factorization of 5649
3 | 5649 |
7 | 1883 |
269 | 269 |
1 |
Prime factors of 5649 are 3, 7,269. Prime factorization of 5649 in exponential form is:
5649 = 31×71×2691
Now multiplying the highest exponent prime factors to calculate the LCM of 5645 and 5649.
LCM(5645,5649) = 31×51×71×2691×11291
LCM(5645,5649) = 31888605
Factors of 5645
List of positive integer factors of 5645 that divides 5645 without a remainder.
1, 5, 1129, 5645
Factors of 5649
List of positive integer factors of 5649 that divides 5649 without a remainder.
1, 3, 7, 21, 269, 807, 1883, 5649
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 5645 and 5649, than apply into the LCM equation.
GCF(5645,5649) = 1
LCM(5645,5649) = ( 5645 × 5649) / 1
LCM(5645,5649) = 31888605 / 1
LCM(5645,5649) = 31888605
(i) The LCM of 5649 and 5645 is associative
LCM of 5645 and 5649 = LCM of 5649 and 5645
1. What is the LCM of 5645 and 5649?
Answer: LCM of 5645 and 5649 is 31888605.
2. What are the Factors of 5645?
Answer: Factors of 5645 are 1, 5, 1129, 5645. There are 4 integers that are factors of 5645. The greatest factor of 5645 is 5645.
3. What are the Factors of 5649?
Answer: Factors of 5649 are 1, 3, 7, 21, 269, 807, 1883, 5649. There are 8 integers that are factors of 5649. The greatest factor of 5649 is 5649.
4. How to Find the LCM of 5645 and 5649?
Answer:
Least Common Multiple of 5645 and 5649 = 31888605
Step 1: Find the prime factorization of 5645
5645 = 5 x 1129
Step 2: Find the prime factorization of 5649
5649 = 3 x 7 x 269
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31888605 = 3 x 5 x 7 x 269 x 1129
Step 4: Therefore, the least common multiple of 5645 and 5649 is 31888605.