Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7686 and 7690 the smallest integer that is 29552670 that is divisible by both numbers.
Least Common Multiple (LCM) of 7686 and 7690 is 29552670.
LCM(7686,7690) = 29552670
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 7686 and 7690. First we will calculate the prime factors of 7686 and 7690.
Prime Factorization of 7686
2 | 7686 |
3 | 3843 |
3 | 1281 |
7 | 427 |
61 | 61 |
1 |
Prime factors of 7686 are 2, 3, 7,61. Prime factorization of 7686 in exponential form is:
7686 = 21×32×71×611
Prime Factorization of 7690
2 | 7690 |
5 | 3845 |
769 | 769 |
1 |
Prime factors of 7690 are 2, 5,769. Prime factorization of 7690 in exponential form is:
7690 = 21×51×7691
Now multiplying the highest exponent prime factors to calculate the LCM of 7686 and 7690.
LCM(7686,7690) = 21×32×51×71×611×7691
LCM(7686,7690) = 29552670
Factors of 7686
List of positive integer factors of 7686 that divides 7686 without a remainder.
1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 61, 63, 122, 126, 183, 366, 427, 549, 854, 1098, 1281, 2562, 3843, 7686
Factors of 7690
List of positive integer factors of 7690 that divides 7690 without a remainder.
1, 2, 5, 10, 769, 1538, 3845, 7690
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7686 and 7690, than apply into the LCM equation.
GCF(7686,7690) = 2
LCM(7686,7690) = ( 7686 × 7690) / 2
LCM(7686,7690) = 59105340 / 2
LCM(7686,7690) = 29552670
(i) The LCM of 7690 and 7686 is associative
LCM of 7686 and 7690 = LCM of 7690 and 7686
1. What is the LCM of 7686 and 7690?
Answer: LCM of 7686 and 7690 is 29552670.
2. What are the Factors of 7686?
Answer: Factors of 7686 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 61, 63, 122, 126, 183, 366, 427, 549, 854, 1098, 1281, 2562, 3843, 7686. There are 24 integers that are factors of 7686. The greatest factor of 7686 is 7686.
3. What are the Factors of 7690?
Answer: Factors of 7690 are 1, 2, 5, 10, 769, 1538, 3845, 7690. There are 8 integers that are factors of 7690. The greatest factor of 7690 is 7690.
4. How to Find the LCM of 7686 and 7690?
Answer:
Least Common Multiple of 7686 and 7690 = 29552670
Step 1: Find the prime factorization of 7686
7686 = 2 x 3 x 3 x 7 x 61
Step 2: Find the prime factorization of 7690
7690 = 2 x 5 x 769
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 29552670 = 2 x 3 x 3 x 5 x 7 x 61 x 769
Step 4: Therefore, the least common multiple of 7686 and 7690 is 29552670.