Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 9781 and 9789 the smallest integer that is 95746209 that is divisible by both numbers.
Least Common Multiple (LCM) of 9781 and 9789 is 95746209.
LCM(9781,9789) = 95746209
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 9781 and 9789. First we will calculate the prime factors of 9781 and 9789.
Prime Factorization of 9781
9781 | 9781 |
1 |
Prime factors of 9781 are 9781. Prime factorization of 9781 in exponential form is:
9781 = 97811
Prime Factorization of 9789
3 | 9789 |
13 | 3263 |
251 | 251 |
1 |
Prime factors of 9789 are 3, 13,251. Prime factorization of 9789 in exponential form is:
9789 = 31×131×2511
Now multiplying the highest exponent prime factors to calculate the LCM of 9781 and 9789.
LCM(9781,9789) = 31×131×2511×97811
LCM(9781,9789) = 95746209
Factors of 9781
List of positive integer factors of 9781 that divides 9781 without a remainder.
1, 9781
Factors of 9789
List of positive integer factors of 9789 that divides 9789 without a remainder.
1, 3, 13, 39, 251, 753, 3263, 9789
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9781 and 9789, than apply into the LCM equation.
GCF(9781,9789) = 1
LCM(9781,9789) = ( 9781 × 9789) / 1
LCM(9781,9789) = 95746209 / 1
LCM(9781,9789) = 95746209
(i) The LCM of 9789 and 9781 is associative
LCM of 9781 and 9789 = LCM of 9789 and 9781
1. What is the LCM of 9781 and 9789?
Answer: LCM of 9781 and 9789 is 95746209.
2. What are the Factors of 9781?
Answer: Factors of 9781 are 1, 9781. There are 2 integers that are factors of 9781. The greatest factor of 9781 is 9781.
3. What are the Factors of 9789?
Answer: Factors of 9789 are 1, 3, 13, 39, 251, 753, 3263, 9789. There are 8 integers that are factors of 9789. The greatest factor of 9789 is 9789.
4. How to Find the LCM of 9781 and 9789?
Answer:
Least Common Multiple of 9781 and 9789 = 95746209
Step 1: Find the prime factorization of 9781
9781 = 9781
Step 2: Find the prime factorization of 9789
9789 = 3 x 13 x 251
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 95746209 = 3 x 13 x 251 x 9781
Step 4: Therefore, the least common multiple of 9781 and 9789 is 95746209.