Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1220 and 1227 the smallest integer that is 1496940 that is divisible by both numbers.
Least Common Multiple (LCM) of 1220 and 1227 is 1496940.
LCM(1220,1227) = 1496940
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 1220 and 1227. First we will calculate the prime factors of 1220 and 1227.
Prime Factorization of 1220
2 | 1220 |
2 | 610 |
5 | 305 |
61 | 61 |
1 |
Prime factors of 1220 are 2, 5,61. Prime factorization of 1220 in exponential form is:
1220 = 22×51×611
Prime Factorization of 1227
3 | 1227 |
409 | 409 |
1 |
Prime factors of 1227 are 3,409. Prime factorization of 1227 in exponential form is:
1227 = 31×4091
Now multiplying the highest exponent prime factors to calculate the LCM of 1220 and 1227.
LCM(1220,1227) = 22×31×51×611×4091
LCM(1220,1227) = 1496940
Factors of 1220
List of positive integer factors of 1220 that divides 1220 without a remainder.
1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220
Factors of 1227
List of positive integer factors of 1227 that divides 1227 without a remainder.
1, 3, 409, 1227
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1220 and 1227, than apply into the LCM equation.
GCF(1220,1227) = 1
LCM(1220,1227) = ( 1220 × 1227) / 1
LCM(1220,1227) = 1496940 / 1
LCM(1220,1227) = 1496940
(i) The LCM of 1227 and 1220 is associative
LCM of 1220 and 1227 = LCM of 1227 and 1220
1. What is the LCM of 1220 and 1227?
Answer: LCM of 1220 and 1227 is 1496940.
2. What are the Factors of 1220?
Answer: Factors of 1220 are 1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220. There are 12 integers that are factors of 1220. The greatest factor of 1220 is 1220.
3. What are the Factors of 1227?
Answer: Factors of 1227 are 1, 3, 409, 1227. There are 4 integers that are factors of 1227. The greatest factor of 1227 is 1227.
4. How to Find the LCM of 1220 and 1227?
Answer:
Least Common Multiple of 1220 and 1227 = 1496940
Step 1: Find the prime factorization of 1220
1220 = 2 x 2 x 5 x 61
Step 2: Find the prime factorization of 1227
1227 = 3 x 409
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1496940 = 2 x 2 x 3 x 5 x 61 x 409
Step 4: Therefore, the least common multiple of 1220 and 1227 is 1496940.