Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1865 and 1870 the smallest integer that is 697510 that is divisible by both numbers.
Least Common Multiple (LCM) of 1865 and 1870 is 697510.
LCM(1865,1870) = 697510
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 1865 and 1870. First we will calculate the prime factors of 1865 and 1870.
Prime Factorization of 1865
5 | 1865 |
373 | 373 |
1 |
Prime factors of 1865 are 5,373. Prime factorization of 1865 in exponential form is:
1865 = 51×3731
Prime Factorization of 1870
2 | 1870 |
5 | 935 |
11 | 187 |
17 | 17 |
1 |
Prime factors of 1870 are 2, 5, 11,17. Prime factorization of 1870 in exponential form is:
1870 = 21×51×111×171
Now multiplying the highest exponent prime factors to calculate the LCM of 1865 and 1870.
LCM(1865,1870) = 21×51×111×171×3731
LCM(1865,1870) = 697510
Factors of 1865
List of positive integer factors of 1865 that divides 1865 without a remainder.
1, 5, 373, 1865
Factors of 1870
List of positive integer factors of 1870 that divides 1870 without a remainder.
1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1865 and 1870, than apply into the LCM equation.
GCF(1865,1870) = 5
LCM(1865,1870) = ( 1865 × 1870) / 5
LCM(1865,1870) = 3487550 / 5
LCM(1865,1870) = 697510
(i) The LCM of 1870 and 1865 is associative
LCM of 1865 and 1870 = LCM of 1870 and 1865
1. What is the LCM of 1865 and 1870?
Answer: LCM of 1865 and 1870 is 697510.
2. What are the Factors of 1865?
Answer: Factors of 1865 are 1, 5, 373, 1865. There are 4 integers that are factors of 1865. The greatest factor of 1865 is 1865.
3. What are the Factors of 1870?
Answer: Factors of 1870 are 1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870. There are 16 integers that are factors of 1870. The greatest factor of 1870 is 1870.
4. How to Find the LCM of 1865 and 1870?
Answer:
Least Common Multiple of 1865 and 1870 = 697510
Step 1: Find the prime factorization of 1865
1865 = 5 x 373
Step 2: Find the prime factorization of 1870
1870 = 2 x 5 x 11 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 697510 = 2 x 5 x 11 x 17 x 373
Step 4: Therefore, the least common multiple of 1865 and 1870 is 697510.