Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1687 and 1694 the smallest integer that is 408254 that is divisible by both numbers.
Least Common Multiple (LCM) of 1687 and 1694 is 408254.
LCM(1687,1694) = 408254
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 1687 and 1694. First we will calculate the prime factors of 1687 and 1694.
Prime Factorization of 1687
7 | 1687 |
241 | 241 |
1 |
Prime factors of 1687 are 7,241. Prime factorization of 1687 in exponential form is:
1687 = 71×2411
Prime Factorization of 1694
2 | 1694 |
7 | 847 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 1694 are 2, 7,11. Prime factorization of 1694 in exponential form is:
1694 = 21×71×112
Now multiplying the highest exponent prime factors to calculate the LCM of 1687 and 1694.
LCM(1687,1694) = 21×71×112×2411
LCM(1687,1694) = 408254
Factors of 1687
List of positive integer factors of 1687 that divides 1687 without a remainder.
1, 7, 241, 1687
Factors of 1694
List of positive integer factors of 1694 that divides 1694 without a remainder.
1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1687 and 1694, than apply into the LCM equation.
GCF(1687,1694) = 7
LCM(1687,1694) = ( 1687 × 1694) / 7
LCM(1687,1694) = 2857778 / 7
LCM(1687,1694) = 408254
(i) The LCM of 1694 and 1687 is associative
LCM of 1687 and 1694 = LCM of 1694 and 1687
1. What is the LCM of 1687 and 1694?
Answer: LCM of 1687 and 1694 is 408254.
2. What are the Factors of 1687?
Answer: Factors of 1687 are 1, 7, 241, 1687. There are 4 integers that are factors of 1687. The greatest factor of 1687 is 1687.
3. What are the Factors of 1694?
Answer: Factors of 1694 are 1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694. There are 12 integers that are factors of 1694. The greatest factor of 1694 is 1694.
4. How to Find the LCM of 1687 and 1694?
Answer:
Least Common Multiple of 1687 and 1694 = 408254
Step 1: Find the prime factorization of 1687
1687 = 7 x 241
Step 2: Find the prime factorization of 1694
1694 = 2 x 7 x 11 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 408254 = 2 x 7 x 11 x 11 x 241
Step 4: Therefore, the least common multiple of 1687 and 1694 is 408254.