Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3942 and 3946 the smallest integer that is 7777566 that is divisible by both numbers.
Least Common Multiple (LCM) of 3942 and 3946 is 7777566.
LCM(3942,3946) = 7777566
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 3942 and 3946. First we will calculate the prime factors of 3942 and 3946.
Prime Factorization of 3942
2 | 3942 |
3 | 1971 |
3 | 657 |
3 | 219 |
73 | 73 |
1 |
Prime factors of 3942 are 2, 3,73. Prime factorization of 3942 in exponential form is:
3942 = 21×33×731
Prime Factorization of 3946
2 | 3946 |
1973 | 1973 |
1 |
Prime factors of 3946 are 2,1973. Prime factorization of 3946 in exponential form is:
3946 = 21×19731
Now multiplying the highest exponent prime factors to calculate the LCM of 3942 and 3946.
LCM(3942,3946) = 21×33×731×19731
LCM(3942,3946) = 7777566
Factors of 3942
List of positive integer factors of 3942 that divides 3942 without a remainder.
1, 2, 3, 6, 9, 18, 27, 54, 73, 146, 219, 438, 657, 1314, 1971, 3942
Factors of 3946
List of positive integer factors of 3946 that divides 3946 without a remainder.
1, 2, 1973, 3946
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3942 and 3946, than apply into the LCM equation.
GCF(3942,3946) = 2
LCM(3942,3946) = ( 3942 × 3946) / 2
LCM(3942,3946) = 15555132 / 2
LCM(3942,3946) = 7777566
(i) The LCM of 3946 and 3942 is associative
LCM of 3942 and 3946 = LCM of 3946 and 3942
1. What is the LCM of 3942 and 3946?
Answer: LCM of 3942 and 3946 is 7777566.
2. What are the Factors of 3942?
Answer: Factors of 3942 are 1, 2, 3, 6, 9, 18, 27, 54, 73, 146, 219, 438, 657, 1314, 1971, 3942. There are 16 integers that are factors of 3942. The greatest factor of 3942 is 3942.
3. What are the Factors of 3946?
Answer: Factors of 3946 are 1, 2, 1973, 3946. There are 4 integers that are factors of 3946. The greatest factor of 3946 is 3946.
4. How to Find the LCM of 3942 and 3946?
Answer:
Least Common Multiple of 3942 and 3946 = 7777566
Step 1: Find the prime factorization of 3942
3942 = 2 x 3 x 3 x 3 x 73
Step 2: Find the prime factorization of 3946
3946 = 2 x 1973
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7777566 = 2 x 3 x 3 x 3 x 73 x 1973
Step 4: Therefore, the least common multiple of 3942 and 3946 is 7777566.