Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 205 and 210 the smallest integer that is 8610 that is divisible by both numbers.
Least Common Multiple (LCM) of 205 and 210 is 8610.
LCM(205,210) = 8610
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 205 and 210. First we will calculate the prime factors of 205 and 210.
Prime Factorization of 205
5 | 205 |
41 | 41 |
1 |
Prime factors of 205 are 5,41. Prime factorization of 205 in exponential form is:
205 = 51×411
Prime Factorization of 210
2 | 210 |
3 | 105 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 210 are 2, 3, 5,7. Prime factorization of 210 in exponential form is:
210 = 21×31×51×71
Now multiplying the highest exponent prime factors to calculate the LCM of 205 and 210.
LCM(205,210) = 21×31×51×71×411
LCM(205,210) = 8610
Factors of 205
List of positive integer factors of 205 that divides 205 without a remainder.
1, 5, 41, 205
Factors of 210
List of positive integer factors of 210 that divides 210 without a remainder.
1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 205 and 210, than apply into the LCM equation.
GCF(205,210) = 5
LCM(205,210) = ( 205 × 210) / 5
LCM(205,210) = 43050 / 5
LCM(205,210) = 8610
(i) The LCM of 210 and 205 is associative
LCM of 205 and 210 = LCM of 210 and 205
1. What is the LCM of 205 and 210?
Answer: LCM of 205 and 210 is 8610.
2. What are the Factors of 205?
Answer: Factors of 205 are 1, 5, 41, 205. There are 4 integers that are factors of 205. The greatest factor of 205 is 205.
3. What are the Factors of 210?
Answer: Factors of 210 are 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210. There are 16 integers that are factors of 210. The greatest factor of 210 is 210.
4. How to Find the LCM of 205 and 210?
Answer:
Least Common Multiple of 205 and 210 = 8610
Step 1: Find the prime factorization of 205
205 = 5 x 41
Step 2: Find the prime factorization of 210
210 = 2 x 3 x 5 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 = 8610 = 2 x 3 x 5 x 7 x 41
Step 4: Therefore, the least common multiple of 205 and 210 is 8610.