Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3871 and 3876 the smallest integer that is 15003996 that is divisible by both numbers.
Least Common Multiple (LCM) of 3871 and 3876 is 15003996.
LCM(3871,3876) = 15003996
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 3871 and 3876. First we will calculate the prime factors of 3871 and 3876.
Prime Factorization of 3871
7 | 3871 |
7 | 553 |
79 | 79 |
1 |
Prime factors of 3871 are 7,79. Prime factorization of 3871 in exponential form is:
3871 = 72×791
Prime Factorization of 3876
2 | 3876 |
2 | 1938 |
3 | 969 |
17 | 323 |
19 | 19 |
1 |
Prime factors of 3876 are 2, 3, 17,19. Prime factorization of 3876 in exponential form is:
3876 = 22×31×171×191
Now multiplying the highest exponent prime factors to calculate the LCM of 3871 and 3876.
LCM(3871,3876) = 22×31×72×171×191×791
LCM(3871,3876) = 15003996
Factors of 3871
List of positive integer factors of 3871 that divides 3871 without a remainder.
1, 7, 49, 79, 553, 3871
Factors of 3876
List of positive integer factors of 3876 that divides 3876 without a remainder.
1, 2, 3, 4, 6, 12, 17, 19, 34, 38, 51, 57, 68, 76, 102, 114, 204, 228, 323, 646, 969, 1292, 1938, 3876
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3871 and 3876, than apply into the LCM equation.
GCF(3871,3876) = 1
LCM(3871,3876) = ( 3871 × 3876) / 1
LCM(3871,3876) = 15003996 / 1
LCM(3871,3876) = 15003996
(i) The LCM of 3876 and 3871 is associative
LCM of 3871 and 3876 = LCM of 3876 and 3871
1. What is the LCM of 3871 and 3876?
Answer: LCM of 3871 and 3876 is 15003996.
2. What are the Factors of 3871?
Answer: Factors of 3871 are 1, 7, 49, 79, 553, 3871. There are 6 integers that are factors of 3871. The greatest factor of 3871 is 3871.
3. What are the Factors of 3876?
Answer: Factors of 3876 are 1, 2, 3, 4, 6, 12, 17, 19, 34, 38, 51, 57, 68, 76, 102, 114, 204, 228, 323, 646, 969, 1292, 1938, 3876. There are 24 integers that are factors of 3876. The greatest factor of 3876 is 3876.
4. How to Find the LCM of 3871 and 3876?
Answer:
Least Common Multiple of 3871 and 3876 = 15003996
Step 1: Find the prime factorization of 3871
3871 = 7 x 7 x 79
Step 2: Find the prime factorization of 3876
3876 = 2 x 2 x 3 x 17 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15003996 = 2 x 2 x 3 x 7 x 7 x 17 x 19 x 79
Step 4: Therefore, the least common multiple of 3871 and 3876 is 15003996.