Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3965 and 3970 the smallest integer that is 3148210 that is divisible by both numbers.
Least Common Multiple (LCM) of 3965 and 3970 is 3148210.
LCM(3965,3970) = 3148210
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 3965 and 3970. First we will calculate the prime factors of 3965 and 3970.
Prime Factorization of 3965
5 | 3965 |
13 | 793 |
61 | 61 |
1 |
Prime factors of 3965 are 5, 13,61. Prime factorization of 3965 in exponential form is:
3965 = 51×131×611
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
Now multiplying the highest exponent prime factors to calculate the LCM of 3965 and 3970.
LCM(3965,3970) = 21×51×131×611×3971
LCM(3965,3970) = 3148210
Factors of 3965
List of positive integer factors of 3965 that divides 3965 without a remainder.
1, 5, 13, 61, 65, 305, 793, 3965
Factors of 3970
List of positive integer factors of 3970 that divides 3970 without a remainder.
1, 2, 5, 10, 397, 794, 1985, 3970
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3965 and 3970, than apply into the LCM equation.
GCF(3965,3970) = 5
LCM(3965,3970) = ( 3965 × 3970) / 5
LCM(3965,3970) = 15741050 / 5
LCM(3965,3970) = 3148210
(i) The LCM of 3970 and 3965 is associative
LCM of 3965 and 3970 = LCM of 3970 and 3965
1. What is the LCM of 3965 and 3970?
Answer: LCM of 3965 and 3970 is 3148210.
2. What are the Factors of 3965?
Answer: Factors of 3965 are 1, 5, 13, 61, 65, 305, 793, 3965. There are 8 integers that are factors of 3965. The greatest factor of 3965 is 3965.
3. 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.
4. How to Find the LCM of 3965 and 3970?
Answer:
Least Common Multiple of 3965 and 3970 = 3148210
Step 1: Find the prime factorization of 3965
3965 = 5 x 13 x 61
Step 2: Find the prime factorization of 3970
3970 = 2 x 5 x 397
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3148210 = 2 x 5 x 13 x 61 x 397
Step 4: Therefore, the least common multiple of 3965 and 3970 is 3148210.