Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 220 and 222 the smallest integer that is 24420 that is divisible by both numbers.
Least Common Multiple (LCM) of 220 and 222 is 24420.
LCM(220,222) = 24420
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 220 and 222. First we will calculate the prime factors of 220 and 222.
Prime Factorization of 220
2 | 220 |
2 | 110 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 220 are 2, 5,11. Prime factorization of 220 in exponential form is:
220 = 22×51×111
Prime Factorization of 222
2 | 222 |
3 | 111 |
37 | 37 |
1 |
Prime factors of 222 are 2, 3,37. Prime factorization of 222 in exponential form is:
222 = 21×31×371
Now multiplying the highest exponent prime factors to calculate the LCM of 220 and 222.
LCM(220,222) = 22×31×51×111×371
LCM(220,222) = 24420
Factors of 220
List of positive integer factors of 220 that divides 220 without a remainder.
1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220
Factors of 222
List of positive integer factors of 222 that divides 222 without a remainder.
1, 2, 3, 6, 37, 74, 111, 222
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 220 and 222, than apply into the LCM equation.
GCF(220,222) = 2
LCM(220,222) = ( 220 × 222) / 2
LCM(220,222) = 48840 / 2
LCM(220,222) = 24420
(i) The LCM of 222 and 220 is associative
LCM of 220 and 222 = LCM of 222 and 220
1. What is the LCM of 220 and 222?
Answer: LCM of 220 and 222 is 24420.
2. What are the Factors of 220?
Answer: Factors of 220 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220. There are 12 integers that are factors of 220. The greatest factor of 220 is 220.
3. What are the Factors of 222?
Answer: Factors of 222 are 1, 2, 3, 6, 37, 74, 111, 222. There are 8 integers that are factors of 222. The greatest factor of 222 is 222.
4. How to Find the LCM of 220 and 222?
Answer:
Least Common Multiple of 220 and 222 = 24420
Step 1: Find the prime factorization of 220
220 = 2 x 2 x 5 x 11
Step 2: Find the prime factorization of 222
222 = 2 x 3 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 24420 = 2 x 2 x 3 x 5 x 11 x 37
Step 4: Therefore, the least common multiple of 220 and 222 is 24420.