Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3970 and 3971 the smallest integer that is 15764870 that is divisible by both numbers.
Least Common Multiple (LCM) of 3970 and 3971 is 15764870.
LCM(3970,3971) = 15764870
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 3970 and 3971. First we will calculate the prime factors of 3970 and 3971.
Prime Factorization of 3970
2 | 3970 |
5 | 1985 |
397 | 397 |
1 |
Prime factors of 3970 are 2, 5,397. Prime factorization of 3970 in exponential form is:
3970 = 21×51×3971
Prime Factorization of 3971
11 | 3971 |
19 | 361 |
19 | 19 |
1 |
Prime factors of 3971 are 11,19. Prime factorization of 3971 in exponential form is:
3971 = 111×192
Now multiplying the highest exponent prime factors to calculate the LCM of 3970 and 3971.
LCM(3970,3971) = 21×51×111×192×3971
LCM(3970,3971) = 15764870
Factors of 3970
List of positive integer factors of 3970 that divides 3970 without a remainder.
1, 2, 5, 10, 397, 794, 1985, 3970
Factors of 3971
List of positive integer factors of 3971 that divides 3971 without a remainder.
1, 11, 19, 209, 361, 3971
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3970 and 3971, than apply into the LCM equation.
GCF(3970,3971) = 1
LCM(3970,3971) = ( 3970 × 3971) / 1
LCM(3970,3971) = 15764870 / 1
LCM(3970,3971) = 15764870
(i) The LCM of 3971 and 3970 is associative
LCM of 3970 and 3971 = LCM of 3971 and 3970
1. What is the LCM of 3970 and 3971?
Answer: LCM of 3970 and 3971 is 15764870.
2. What are the Factors of 3970?
Answer: Factors of 3970 are 1, 2, 5, 10, 397, 794, 1985, 3970. There are 8 integers that are factors of 3970. The greatest factor of 3970 is 3970.
3. What are the Factors of 3971?
Answer: Factors of 3971 are 1, 11, 19, 209, 361, 3971. There are 6 integers that are factors of 3971. The greatest factor of 3971 is 3971.
4. How to Find the LCM of 3970 and 3971?
Answer:
Least Common Multiple of 3970 and 3971 = 15764870
Step 1: Find the prime factorization of 3970
3970 = 2 x 5 x 397
Step 2: Find the prime factorization of 3971
3971 = 11 x 19 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 = 15764870 = 2 x 5 x 11 x 19 x 19 x 397
Step 4: Therefore, the least common multiple of 3970 and 3971 is 15764870.