Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 690 and 696 the smallest integer that is 80040 that is divisible by both numbers.
Least Common Multiple (LCM) of 690 and 696 is 80040.
LCM(690,696) = 80040
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 690 and 696. First we will calculate the prime factors of 690 and 696.
Prime Factorization of 690
2 | 690 |
3 | 345 |
5 | 115 |
23 | 23 |
1 |
Prime factors of 690 are 2, 3, 5,23. Prime factorization of 690 in exponential form is:
690 = 21×31×51×231
Prime Factorization of 696
2 | 696 |
2 | 348 |
2 | 174 |
3 | 87 |
29 | 29 |
1 |
Prime factors of 696 are 2, 3,29. Prime factorization of 696 in exponential form is:
696 = 23×31×291
Now multiplying the highest exponent prime factors to calculate the LCM of 690 and 696.
LCM(690,696) = 23×31×51×231×291
LCM(690,696) = 80040
Factors of 690
List of positive integer factors of 690 that divides 690 without a remainder.
1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
Factors of 696
List of positive integer factors of 696 that divides 696 without a remainder.
1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 116, 174, 232, 348, 696
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 690 and 696, than apply into the LCM equation.
GCF(690,696) = 6
LCM(690,696) = ( 690 × 696) / 6
LCM(690,696) = 480240 / 6
LCM(690,696) = 80040
(i) The LCM of 696 and 690 is associative
LCM of 690 and 696 = LCM of 696 and 690
1. What is the LCM of 690 and 696?
Answer: LCM of 690 and 696 is 80040.
2. What are the Factors of 690?
Answer: Factors of 690 are 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690. There are 16 integers that are factors of 690. The greatest factor of 690 is 690.
3. What are the Factors of 696?
Answer: Factors of 696 are 1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 116, 174, 232, 348, 696. There are 16 integers that are factors of 696. The greatest factor of 696 is 696.
4. How to Find the LCM of 690 and 696?
Answer:
Least Common Multiple of 690 and 696 = 80040
Step 1: Find the prime factorization of 690
690 = 2 x 3 x 5 x 23
Step 2: Find the prime factorization of 696
696 = 2 x 2 x 2 x 3 x 29
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 80040 = 2 x 2 x 2 x 3 x 5 x 23 x 29
Step 4: Therefore, the least common multiple of 690 and 696 is 80040.