Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3680 and 3685 the smallest integer that is 2712160 that is divisible by both numbers.
Least Common Multiple (LCM) of 3680 and 3685 is 2712160.
LCM(3680,3685) = 2712160
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 3680 and 3685. First we will calculate the prime factors of 3680 and 3685.
Prime Factorization of 3680
2 | 3680 |
2 | 1840 |
2 | 920 |
2 | 460 |
2 | 230 |
5 | 115 |
23 | 23 |
1 |
Prime factors of 3680 are 2, 5,23. Prime factorization of 3680 in exponential form is:
3680 = 25×51×231
Prime Factorization of 3685
5 | 3685 |
11 | 737 |
67 | 67 |
1 |
Prime factors of 3685 are 5, 11,67. Prime factorization of 3685 in exponential form is:
3685 = 51×111×671
Now multiplying the highest exponent prime factors to calculate the LCM of 3680 and 3685.
LCM(3680,3685) = 25×51×111×231×671
LCM(3680,3685) = 2712160
Factors of 3680
List of positive integer factors of 3680 that divides 3680 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680
Factors of 3685
List of positive integer factors of 3685 that divides 3685 without a remainder.
1, 5, 11, 55, 67, 335, 737, 3685
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3680 and 3685, than apply into the LCM equation.
GCF(3680,3685) = 5
LCM(3680,3685) = ( 3680 × 3685) / 5
LCM(3680,3685) = 13560800 / 5
LCM(3680,3685) = 2712160
(i) The LCM of 3685 and 3680 is associative
LCM of 3680 and 3685 = LCM of 3685 and 3680
1. What is the LCM of 3680 and 3685?
Answer: LCM of 3680 and 3685 is 2712160.
2. What are the Factors of 3680?
Answer: Factors of 3680 are 1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680. There are 24 integers that are factors of 3680. The greatest factor of 3680 is 3680.
3. What are the Factors of 3685?
Answer: Factors of 3685 are 1, 5, 11, 55, 67, 335, 737, 3685. There are 8 integers that are factors of 3685. The greatest factor of 3685 is 3685.
4. How to Find the LCM of 3680 and 3685?
Answer:
Least Common Multiple of 3680 and 3685 = 2712160
Step 1: Find the prime factorization of 3680
3680 = 2 x 2 x 2 x 2 x 2 x 5 x 23
Step 2: Find the prime factorization of 3685
3685 = 5 x 11 x 67
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2712160 = 2 x 2 x 2 x 2 x 2 x 5 x 11 x 23 x 67
Step 4: Therefore, the least common multiple of 3680 and 3685 is 2712160.