Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3555 and 3561 the smallest integer that is 4219785 that is divisible by both numbers.
Least Common Multiple (LCM) of 3555 and 3561 is 4219785.
LCM(3555,3561) = 4219785
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 3555 and 3561. First we will calculate the prime factors of 3555 and 3561.
Prime Factorization of 3555
3 | 3555 |
3 | 1185 |
5 | 395 |
79 | 79 |
1 |
Prime factors of 3555 are 3, 5,79. Prime factorization of 3555 in exponential form is:
3555 = 32×51×791
Prime Factorization of 3561
3 | 3561 |
1187 | 1187 |
1 |
Prime factors of 3561 are 3,1187. Prime factorization of 3561 in exponential form is:
3561 = 31×11871
Now multiplying the highest exponent prime factors to calculate the LCM of 3555 and 3561.
LCM(3555,3561) = 32×51×791×11871
LCM(3555,3561) = 4219785
Factors of 3555
List of positive integer factors of 3555 that divides 3555 without a remainder.
1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555
Factors of 3561
List of positive integer factors of 3561 that divides 3561 without a remainder.
1, 3, 1187, 3561
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3555 and 3561, than apply into the LCM equation.
GCF(3555,3561) = 3
LCM(3555,3561) = ( 3555 × 3561) / 3
LCM(3555,3561) = 12659355 / 3
LCM(3555,3561) = 4219785
(i) The LCM of 3561 and 3555 is associative
LCM of 3555 and 3561 = LCM of 3561 and 3555
1. What is the LCM of 3555 and 3561?
Answer: LCM of 3555 and 3561 is 4219785.
2. What are the Factors of 3555?
Answer: Factors of 3555 are 1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555. There are 12 integers that are factors of 3555. The greatest factor of 3555 is 3555.
3. What are the Factors of 3561?
Answer: Factors of 3561 are 1, 3, 1187, 3561. There are 4 integers that are factors of 3561. The greatest factor of 3561 is 3561.
4. How to Find the LCM of 3555 and 3561?
Answer:
Least Common Multiple of 3555 and 3561 = 4219785
Step 1: Find the prime factorization of 3555
3555 = 3 x 3 x 5 x 79
Step 2: Find the prime factorization of 3561
3561 = 3 x 1187
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4219785 = 3 x 3 x 5 x 79 x 1187
Step 4: Therefore, the least common multiple of 3555 and 3561 is 4219785.