Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1641 and 1648 the smallest integer that is 2704368 that is divisible by both numbers.
Least Common Multiple (LCM) of 1641 and 1648 is 2704368.
LCM(1641,1648) = 2704368
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 1641 and 1648. First we will calculate the prime factors of 1641 and 1648.
Prime Factorization of 1641
3 | 1641 |
547 | 547 |
1 |
Prime factors of 1641 are 3,547. Prime factorization of 1641 in exponential form is:
1641 = 31×5471
Prime Factorization of 1648
2 | 1648 |
2 | 824 |
2 | 412 |
2 | 206 |
103 | 103 |
1 |
Prime factors of 1648 are 2,103. Prime factorization of 1648 in exponential form is:
1648 = 24×1031
Now multiplying the highest exponent prime factors to calculate the LCM of 1641 and 1648.
LCM(1641,1648) = 24×31×1031×5471
LCM(1641,1648) = 2704368
Factors of 1641
List of positive integer factors of 1641 that divides 1641 without a remainder.
1, 3, 547, 1641
Factors of 1648
List of positive integer factors of 1648 that divides 1648 without a remainder.
1, 2, 4, 8, 16, 103, 206, 412, 824, 1648
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1641 and 1648, than apply into the LCM equation.
GCF(1641,1648) = 1
LCM(1641,1648) = ( 1641 × 1648) / 1
LCM(1641,1648) = 2704368 / 1
LCM(1641,1648) = 2704368
(i) The LCM of 1648 and 1641 is associative
LCM of 1641 and 1648 = LCM of 1648 and 1641
1. What is the LCM of 1641 and 1648?
Answer: LCM of 1641 and 1648 is 2704368.
2. What are the Factors of 1641?
Answer: Factors of 1641 are 1, 3, 547, 1641. There are 4 integers that are factors of 1641. The greatest factor of 1641 is 1641.
3. What are the Factors of 1648?
Answer: Factors of 1648 are 1, 2, 4, 8, 16, 103, 206, 412, 824, 1648. There are 10 integers that are factors of 1648. The greatest factor of 1648 is 1648.
4. How to Find the LCM of 1641 and 1648?
Answer:
Least Common Multiple of 1641 and 1648 = 2704368
Step 1: Find the prime factorization of 1641
1641 = 3 x 547
Step 2: Find the prime factorization of 1648
1648 = 2 x 2 x 2 x 2 x 103
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2704368 = 2 x 2 x 2 x 2 x 3 x 103 x 547
Step 4: Therefore, the least common multiple of 1641 and 1648 is 2704368.