Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3860 and 3865 the smallest integer that is 2983780 that is divisible by both numbers.
Least Common Multiple (LCM) of 3860 and 3865 is 2983780.
LCM(3860,3865) = 2983780
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 3860 and 3865. First we will calculate the prime factors of 3860 and 3865.
Prime Factorization of 3860
2 | 3860 |
2 | 1930 |
5 | 965 |
193 | 193 |
1 |
Prime factors of 3860 are 2, 5,193. Prime factorization of 3860 in exponential form is:
3860 = 22×51×1931
Prime Factorization of 3865
5 | 3865 |
773 | 773 |
1 |
Prime factors of 3865 are 5,773. Prime factorization of 3865 in exponential form is:
3865 = 51×7731
Now multiplying the highest exponent prime factors to calculate the LCM of 3860 and 3865.
LCM(3860,3865) = 22×51×1931×7731
LCM(3860,3865) = 2983780
Factors of 3860
List of positive integer factors of 3860 that divides 3860 without a remainder.
1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860
Factors of 3865
List of positive integer factors of 3865 that divides 3865 without a remainder.
1, 5, 773, 3865
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3860 and 3865, than apply into the LCM equation.
GCF(3860,3865) = 5
LCM(3860,3865) = ( 3860 × 3865) / 5
LCM(3860,3865) = 14918900 / 5
LCM(3860,3865) = 2983780
(i) The LCM of 3865 and 3860 is associative
LCM of 3860 and 3865 = LCM of 3865 and 3860
1. What is the LCM of 3860 and 3865?
Answer: LCM of 3860 and 3865 is 2983780.
2. What are the Factors of 3860?
Answer: Factors of 3860 are 1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860. There are 12 integers that are factors of 3860. The greatest factor of 3860 is 3860.
3. What are the Factors of 3865?
Answer: Factors of 3865 are 1, 5, 773, 3865. There are 4 integers that are factors of 3865. The greatest factor of 3865 is 3865.
4. How to Find the LCM of 3860 and 3865?
Answer:
Least Common Multiple of 3860 and 3865 = 2983780
Step 1: Find the prime factorization of 3860
3860 = 2 x 2 x 5 x 193
Step 2: Find the prime factorization of 3865
3865 = 5 x 773
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2983780 = 2 x 2 x 5 x 193 x 773
Step 4: Therefore, the least common multiple of 3860 and 3865 is 2983780.