Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1214 and 1220 the smallest integer that is 740540 that is divisible by both numbers.
Least Common Multiple (LCM) of 1214 and 1220 is 740540.
LCM(1214,1220) = 740540
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 1214 and 1220. First we will calculate the prime factors of 1214 and 1220.
Prime Factorization of 1214
2 | 1214 |
607 | 607 |
1 |
Prime factors of 1214 are 2,607. Prime factorization of 1214 in exponential form is:
1214 = 21×6071
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
Now multiplying the highest exponent prime factors to calculate the LCM of 1214 and 1220.
LCM(1214,1220) = 22×51×611×6071
LCM(1214,1220) = 740540
Factors of 1214
List of positive integer factors of 1214 that divides 1214 without a remainder.
1, 2, 607, 1214
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
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1214 and 1220, than apply into the LCM equation.
GCF(1214,1220) = 2
LCM(1214,1220) = ( 1214 × 1220) / 2
LCM(1214,1220) = 1481080 / 2
LCM(1214,1220) = 740540
(i) The LCM of 1220 and 1214 is associative
LCM of 1214 and 1220 = LCM of 1220 and 1214
1. What is the LCM of 1214 and 1220?
Answer: LCM of 1214 and 1220 is 740540.
2. What are the Factors of 1214?
Answer: Factors of 1214 are 1, 2, 607, 1214. There are 4 integers that are factors of 1214. The greatest factor of 1214 is 1214.
3. 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.
4. How to Find the LCM of 1214 and 1220?
Answer:
Least Common Multiple of 1214 and 1220 = 740540
Step 1: Find the prime factorization of 1214
1214 = 2 x 607
Step 2: Find the prime factorization of 1220
1220 = 2 x 2 x 5 x 61
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 740540 = 2 x 2 x 5 x 61 x 607
Step 4: Therefore, the least common multiple of 1214 and 1220 is 740540.