Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 478 and 480 the smallest integer that is 114720 that is divisible by both numbers.
Least Common Multiple (LCM) of 478 and 480 is 114720.
LCM(478,480) = 114720
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 478 and 480. First we will calculate the prime factors of 478 and 480.
Prime Factorization of 478
2 | 478 |
239 | 239 |
1 |
Prime factors of 478 are 2,239. Prime factorization of 478 in exponential form is:
478 = 21×2391
Prime Factorization of 480
2 | 480 |
2 | 240 |
2 | 120 |
2 | 60 |
2 | 30 |
3 | 15 |
5 | 5 |
1 |
Prime factors of 480 are 2, 3,5. Prime factorization of 480 in exponential form is:
480 = 25×31×51
Now multiplying the highest exponent prime factors to calculate the LCM of 478 and 480.
LCM(478,480) = 25×31×51×2391
LCM(478,480) = 114720
Factors of 478
List of positive integer factors of 478 that divides 478 without a remainder.
1, 2, 239, 478
Factors of 480
List of positive integer factors of 480 that divides 480 without a remainder.
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 478 and 480, than apply into the LCM equation.
GCF(478,480) = 2
LCM(478,480) = ( 478 × 480) / 2
LCM(478,480) = 229440 / 2
LCM(478,480) = 114720
(i) The LCM of 480 and 478 is associative
LCM of 478 and 480 = LCM of 480 and 478
1. What is the LCM of 478 and 480?
Answer: LCM of 478 and 480 is 114720.
2. What are the Factors of 478?
Answer: Factors of 478 are 1, 2, 239, 478. There are 4 integers that are factors of 478. The greatest factor of 478 is 478.
3. What are the Factors of 480?
Answer: Factors of 480 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480. There are 24 integers that are factors of 480. The greatest factor of 480 is 480.
4. How to Find the LCM of 478 and 480?
Answer:
Least Common Multiple of 478 and 480 = 114720
Step 1: Find the prime factorization of 478
478 = 2 x 239
Step 2: Find the prime factorization of 480
480 = 2 x 2 x 2 x 2 x 2 x 3 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 = 114720 = 2 x 2 x 2 x 2 x 2 x 3 x 5 x 239
Step 4: Therefore, the least common multiple of 478 and 480 is 114720.