Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 440 and 445 the smallest integer that is 39160 that is divisible by both numbers.
Least Common Multiple (LCM) of 440 and 445 is 39160.
LCM(440,445) = 39160
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 440 and 445. First we will calculate the prime factors of 440 and 445.
Prime Factorization of 440
2 | 440 |
2 | 220 |
2 | 110 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 440 are 2, 5,11. Prime factorization of 440 in exponential form is:
440 = 23×51×111
Prime Factorization of 445
5 | 445 |
89 | 89 |
1 |
Prime factors of 445 are 5,89. Prime factorization of 445 in exponential form is:
445 = 51×891
Now multiplying the highest exponent prime factors to calculate the LCM of 440 and 445.
LCM(440,445) = 23×51×111×891
LCM(440,445) = 39160
Factors of 440
List of positive integer factors of 440 that divides 440 without a remainder.
1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440
Factors of 445
List of positive integer factors of 445 that divides 445 without a remainder.
1, 5, 89, 445
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 440 and 445, than apply into the LCM equation.
GCF(440,445) = 5
LCM(440,445) = ( 440 × 445) / 5
LCM(440,445) = 195800 / 5
LCM(440,445) = 39160
(i) The LCM of 445 and 440 is associative
LCM of 440 and 445 = LCM of 445 and 440
1. What is the LCM of 440 and 445?
Answer: LCM of 440 and 445 is 39160.
2. What are the Factors of 440?
Answer: Factors of 440 are 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440. There are 16 integers that are factors of 440. The greatest factor of 440 is 440.
3. What are the Factors of 445?
Answer: Factors of 445 are 1, 5, 89, 445. There are 4 integers that are factors of 445. The greatest factor of 445 is 445.
4. How to Find the LCM of 440 and 445?
Answer:
Least Common Multiple of 440 and 445 = 39160
Step 1: Find the prime factorization of 440
440 = 2 x 2 x 2 x 5 x 11
Step 2: Find the prime factorization of 445
445 = 5 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 39160 = 2 x 2 x 2 x 5 x 11 x 89
Step 4: Therefore, the least common multiple of 440 and 445 is 39160.