Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 84 and 94 the smallest integer that is 3948 that is divisible by both numbers.
Least Common Multiple (LCM) of 84 and 94 is 3948.
LCM(84,94) = 3948
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 84 and 94. First we will calculate the prime factors of 84 and 94.
Prime Factorization of 84
2 | 84 |
2 | 42 |
3 | 21 |
7 | 7 |
1 |
Prime factors of 84 are 2, 3,7. Prime factorization of 84 in exponential form is:
84 = 22×31×71
Prime Factorization of 94
2 | 94 |
47 | 47 |
1 |
Prime factors of 94 are 2,47. Prime factorization of 94 in exponential form is:
94 = 21×471
Now multiplying the highest exponent prime factors to calculate the LCM of 84 and 94.
LCM(84,94) = 22×31×71×471
LCM(84,94) = 3948
Factors of 84
List of positive integer factors of 84 that divides 84 without a remainder.
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Factors of 94
List of positive integer factors of 94 that divides 94 without a remainder.
1, 2, 47, 94
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 84 and 94, than apply into the LCM equation.
GCF(84,94) = 2
LCM(84,94) = ( 84 × 94) / 2
LCM(84,94) = 7896 / 2
LCM(84,94) = 3948
(i) The LCM of 94 and 84 is associative
LCM of 84 and 94 = LCM of 94 and 84
1. What is the LCM of 84 and 94?
Answer: LCM of 84 and 94 is 3948.
2. What are the Factors of 84?
Answer: Factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. There are 12 integers that are factors of 84. The greatest factor of 84 is 84.
3. What are the Factors of 94?
Answer: Factors of 94 are 1, 2, 47, 94. There are 4 integers that are factors of 94. The greatest factor of 94 is 94.
4. How to Find the LCM of 84 and 94?
Answer:
Least Common Multiple of 84 and 94 = 3948
Step 1: Find the prime factorization of 84
84 = 2 x 2 x 3 x 7
Step 2: Find the prime factorization of 94
94 = 2 x 47
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3948 = 2 x 2 x 3 x 7 x 47
Step 4: Therefore, the least common multiple of 84 and 94 is 3948.