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 225 the smallest integer that is 9900 that is divisible by both numbers.
Least Common Multiple (LCM) of 220 and 225 is 9900.
LCM(220,225) = 9900
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 225. First we will calculate the prime factors of 220 and 225.
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 225
3 | 225 |
3 | 75 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 225 are 3,5. Prime factorization of 225 in exponential form is:
225 = 32×52
Now multiplying the highest exponent prime factors to calculate the LCM of 220 and 225.
LCM(220,225) = 22×32×52×111
LCM(220,225) = 9900
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 225
List of positive integer factors of 225 that divides 225 without a remainder.
1, 3, 5, 9, 15, 25, 45, 75, 225
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 220 and 225, than apply into the LCM equation.
GCF(220,225) = 5
LCM(220,225) = ( 220 × 225) / 5
LCM(220,225) = 49500 / 5
LCM(220,225) = 9900
(i) The LCM of 225 and 220 is associative
LCM of 220 and 225 = LCM of 225 and 220
1. What is the LCM of 220 and 225?
Answer: LCM of 220 and 225 is 9900.
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 225?
Answer: Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225. There are 9 integers that are factors of 225. The greatest factor of 225 is 225.
4. How to Find the LCM of 220 and 225?
Answer:
Least Common Multiple of 220 and 225 = 9900
Step 1: Find the prime factorization of 220
220 = 2 x 2 x 5 x 11
Step 2: Find the prime factorization of 225
225 = 3 x 3 x 5 x 5
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 9900 = 2 x 2 x 3 x 3 x 5 x 5 x 11
Step 4: Therefore, the least common multiple of 220 and 225 is 9900.