Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7934 and 7938 the smallest integer that is 31490046 that is divisible by both numbers.
Least Common Multiple (LCM) of 7934 and 7938 is 31490046.
LCM(7934,7938) = 31490046
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 7934 and 7938. First we will calculate the prime factors of 7934 and 7938.
Prime Factorization of 7934
2 | 7934 |
3967 | 3967 |
1 |
Prime factors of 7934 are 2,3967. Prime factorization of 7934 in exponential form is:
7934 = 21×39671
Prime Factorization of 7938
2 | 7938 |
3 | 3969 |
3 | 1323 |
3 | 441 |
3 | 147 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 7938 are 2, 3,7. Prime factorization of 7938 in exponential form is:
7938 = 21×34×72
Now multiplying the highest exponent prime factors to calculate the LCM of 7934 and 7938.
LCM(7934,7938) = 21×34×72×39671
LCM(7934,7938) = 31490046
Factors of 7934
List of positive integer factors of 7934 that divides 7934 without a remainder.
1, 2, 3967, 7934
Factors of 7938
List of positive integer factors of 7938 that divides 7938 without a remainder.
1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 81, 98, 126, 147, 162, 189, 294, 378, 441, 567, 882, 1134, 1323, 2646, 3969, 7938
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7934 and 7938, than apply into the LCM equation.
GCF(7934,7938) = 2
LCM(7934,7938) = ( 7934 × 7938) / 2
LCM(7934,7938) = 62980092 / 2
LCM(7934,7938) = 31490046
(i) The LCM of 7938 and 7934 is associative
LCM of 7934 and 7938 = LCM of 7938 and 7934
1. What is the LCM of 7934 and 7938?
Answer: LCM of 7934 and 7938 is 31490046.
2. What are the Factors of 7934?
Answer: Factors of 7934 are 1, 2, 3967, 7934. There are 4 integers that are factors of 7934. The greatest factor of 7934 is 7934.
3. What are the Factors of 7938?
Answer: Factors of 7938 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 81, 98, 126, 147, 162, 189, 294, 378, 441, 567, 882, 1134, 1323, 2646, 3969, 7938. There are 30 integers that are factors of 7938. The greatest factor of 7938 is 7938.
4. How to Find the LCM of 7934 and 7938?
Answer:
Least Common Multiple of 7934 and 7938 = 31490046
Step 1: Find the prime factorization of 7934
7934 = 2 x 3967
Step 2: Find the prime factorization of 7938
7938 = 2 x 3 x 3 x 3 x 3 x 7 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31490046 = 2 x 3 x 3 x 3 x 3 x 7 x 7 x 3967
Step 4: Therefore, the least common multiple of 7934 and 7938 is 31490046.