Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 215 and 216 the smallest integer that is 46440 that is divisible by both numbers.
Least Common Multiple (LCM) of 215 and 216 is 46440.
LCM(215,216) = 46440
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 215 and 216. First we will calculate the prime factors of 215 and 216.
Prime Factorization of 215
5 | 215 |
43 | 43 |
1 |
Prime factors of 215 are 5,43. Prime factorization of 215 in exponential form is:
215 = 51×431
Prime Factorization of 216
2 | 216 |
2 | 108 |
2 | 54 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 216 are 2,3. Prime factorization of 216 in exponential form is:
216 = 23×33
Now multiplying the highest exponent prime factors to calculate the LCM of 215 and 216.
LCM(215,216) = 23×33×51×431
LCM(215,216) = 46440
Factors of 215
List of positive integer factors of 215 that divides 215 without a remainder.
1, 5, 43, 215
Factors of 216
List of positive integer factors of 216 that divides 216 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 215 and 216, than apply into the LCM equation.
GCF(215,216) = 1
LCM(215,216) = ( 215 × 216) / 1
LCM(215,216) = 46440 / 1
LCM(215,216) = 46440
(i) The LCM of 216 and 215 is associative
LCM of 215 and 216 = LCM of 216 and 215
1. What is the LCM of 215 and 216?
Answer: LCM of 215 and 216 is 46440.
2. What are the Factors of 215?
Answer: Factors of 215 are 1, 5, 43, 215. There are 4 integers that are factors of 215. The greatest factor of 215 is 215.
3. What are the Factors of 216?
Answer: Factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216. There are 16 integers that are factors of 216. The greatest factor of 216 is 216.
4. How to Find the LCM of 215 and 216?
Answer:
Least Common Multiple of 215 and 216 = 46440
Step 1: Find the prime factorization of 215
215 = 5 x 43
Step 2: Find the prime factorization of 216
216 = 2 x 2 x 2 x 3 x 3 x 3
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 46440 = 2 x 2 x 2 x 3 x 3 x 3 x 5 x 43
Step 4: Therefore, the least common multiple of 215 and 216 is 46440.