Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 320 and 322 the smallest integer that is 51520 that is divisible by both numbers.
Least Common Multiple (LCM) of 320 and 322 is 51520.
LCM(320,322) = 51520
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 320 and 322. First we will calculate the prime factors of 320 and 322.
Prime Factorization of 320
2 | 320 |
2 | 160 |
2 | 80 |
2 | 40 |
2 | 20 |
2 | 10 |
5 | 5 |
1 |
Prime factors of 320 are 2,5. Prime factorization of 320 in exponential form is:
320 = 26×51
Prime Factorization of 322
2 | 322 |
7 | 161 |
23 | 23 |
1 |
Prime factors of 322 are 2, 7,23. Prime factorization of 322 in exponential form is:
322 = 21×71×231
Now multiplying the highest exponent prime factors to calculate the LCM of 320 and 322.
LCM(320,322) = 26×51×71×231
LCM(320,322) = 51520
Factors of 320
List of positive integer factors of 320 that divides 320 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320
Factors of 322
List of positive integer factors of 322 that divides 322 without a remainder.
1, 2, 7, 14, 23, 46, 161, 322
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 320 and 322, than apply into the LCM equation.
GCF(320,322) = 2
LCM(320,322) = ( 320 × 322) / 2
LCM(320,322) = 103040 / 2
LCM(320,322) = 51520
(i) The LCM of 322 and 320 is associative
LCM of 320 and 322 = LCM of 322 and 320
1. What is the LCM of 320 and 322?
Answer: LCM of 320 and 322 is 51520.
2. What are the Factors of 320?
Answer: Factors of 320 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320. There are 14 integers that are factors of 320. The greatest factor of 320 is 320.
3. What are the Factors of 322?
Answer: Factors of 322 are 1, 2, 7, 14, 23, 46, 161, 322. There are 8 integers that are factors of 322. The greatest factor of 322 is 322.
4. How to Find the LCM of 320 and 322?
Answer:
Least Common Multiple of 320 and 322 = 51520
Step 1: Find the prime factorization of 320
320 = 2 x 2 x 2 x 2 x 2 x 2 x 5
Step 2: Find the prime factorization of 322
322 = 2 x 7 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 51520 = 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 x 23
Step 4: Therefore, the least common multiple of 320 and 322 is 51520.