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 3972 the smallest integer that is 15748980 that is divisible by both numbers.
Least Common Multiple (LCM) of 3965 and 3972 is 15748980.
LCM(3965,3972) = 15748980
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 3972. First we will calculate the prime factors of 3965 and 3972.
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 3972
2 | 3972 |
2 | 1986 |
3 | 993 |
331 | 331 |
1 |
Prime factors of 3972 are 2, 3,331. Prime factorization of 3972 in exponential form is:
3972 = 22×31×3311
Now multiplying the highest exponent prime factors to calculate the LCM of 3965 and 3972.
LCM(3965,3972) = 22×31×51×131×611×3311
LCM(3965,3972) = 15748980
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 3972
List of positive integer factors of 3972 that divides 3972 without a remainder.
1, 2, 3, 4, 6, 12, 331, 662, 993, 1324, 1986, 3972
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3965 and 3972, than apply into the LCM equation.
GCF(3965,3972) = 1
LCM(3965,3972) = ( 3965 × 3972) / 1
LCM(3965,3972) = 15748980 / 1
LCM(3965,3972) = 15748980
(i) The LCM of 3972 and 3965 is associative
LCM of 3965 and 3972 = LCM of 3972 and 3965
1. What is the LCM of 3965 and 3972?
Answer: LCM of 3965 and 3972 is 15748980.
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 3972?
Answer: Factors of 3972 are 1, 2, 3, 4, 6, 12, 331, 662, 993, 1324, 1986, 3972. There are 12 integers that are factors of 3972. The greatest factor of 3972 is 3972.
4. How to Find the LCM of 3965 and 3972?
Answer:
Least Common Multiple of 3965 and 3972 = 15748980
Step 1: Find the prime factorization of 3965
3965 = 5 x 13 x 61
Step 2: Find the prime factorization of 3972
3972 = 2 x 2 x 3 x 331
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15748980 = 2 x 2 x 3 x 5 x 13 x 61 x 331
Step 4: Therefore, the least common multiple of 3965 and 3972 is 15748980.