Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2170 and 2178 the smallest integer that is 2363130 that is divisible by both numbers.
Least Common Multiple (LCM) of 2170 and 2178 is 2363130.
LCM(2170,2178) = 2363130
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 2170 and 2178. First we will calculate the prime factors of 2170 and 2178.
Prime Factorization of 2170
2 | 2170 |
5 | 1085 |
7 | 217 |
31 | 31 |
1 |
Prime factors of 2170 are 2, 5, 7,31. Prime factorization of 2170 in exponential form is:
2170 = 21×51×71×311
Prime Factorization of 2178
2 | 2178 |
3 | 1089 |
3 | 363 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 2178 are 2, 3,11. Prime factorization of 2178 in exponential form is:
2178 = 21×32×112
Now multiplying the highest exponent prime factors to calculate the LCM of 2170 and 2178.
LCM(2170,2178) = 21×32×51×71×112×311
LCM(2170,2178) = 2363130
Factors of 2170
List of positive integer factors of 2170 that divides 2170 without a remainder.
1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170
Factors of 2178
List of positive integer factors of 2178 that divides 2178 without a remainder.
1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 726, 1089, 2178
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2170 and 2178, than apply into the LCM equation.
GCF(2170,2178) = 2
LCM(2170,2178) = ( 2170 × 2178) / 2
LCM(2170,2178) = 4726260 / 2
LCM(2170,2178) = 2363130
(i) The LCM of 2178 and 2170 is associative
LCM of 2170 and 2178 = LCM of 2178 and 2170
1. What is the LCM of 2170 and 2178?
Answer: LCM of 2170 and 2178 is 2363130.
2. What are the Factors of 2170?
Answer: Factors of 2170 are 1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170. There are 16 integers that are factors of 2170. The greatest factor of 2170 is 2170.
3. What are the Factors of 2178?
Answer: Factors of 2178 are 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 726, 1089, 2178. There are 18 integers that are factors of 2178. The greatest factor of 2178 is 2178.
4. How to Find the LCM of 2170 and 2178?
Answer:
Least Common Multiple of 2170 and 2178 = 2363130
Step 1: Find the prime factorization of 2170
2170 = 2 x 5 x 7 x 31
Step 2: Find the prime factorization of 2178
2178 = 2 x 3 x 3 x 11 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2363130 = 2 x 3 x 3 x 5 x 7 x 11 x 11 x 31
Step 4: Therefore, the least common multiple of 2170 and 2178 is 2363130.