Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3890 and 3898 the smallest integer that is 7581610 that is divisible by both numbers.
Least Common Multiple (LCM) of 3890 and 3898 is 7581610.
LCM(3890,3898) = 7581610
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 3890 and 3898. First we will calculate the prime factors of 3890 and 3898.
Prime Factorization of 3890
2 | 3890 |
5 | 1945 |
389 | 389 |
1 |
Prime factors of 3890 are 2, 5,389. Prime factorization of 3890 in exponential form is:
3890 = 21×51×3891
Prime Factorization of 3898
2 | 3898 |
1949 | 1949 |
1 |
Prime factors of 3898 are 2,1949. Prime factorization of 3898 in exponential form is:
3898 = 21×19491
Now multiplying the highest exponent prime factors to calculate the LCM of 3890 and 3898.
LCM(3890,3898) = 21×51×3891×19491
LCM(3890,3898) = 7581610
Factors of 3890
List of positive integer factors of 3890 that divides 3890 without a remainder.
1, 2, 5, 10, 389, 778, 1945, 3890
Factors of 3898
List of positive integer factors of 3898 that divides 3898 without a remainder.
1, 2, 1949, 3898
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3890 and 3898, than apply into the LCM equation.
GCF(3890,3898) = 2
LCM(3890,3898) = ( 3890 × 3898) / 2
LCM(3890,3898) = 15163220 / 2
LCM(3890,3898) = 7581610
(i) The LCM of 3898 and 3890 is associative
LCM of 3890 and 3898 = LCM of 3898 and 3890
1. What is the LCM of 3890 and 3898?
Answer: LCM of 3890 and 3898 is 7581610.
2. What are the Factors of 3890?
Answer: Factors of 3890 are 1, 2, 5, 10, 389, 778, 1945, 3890. There are 8 integers that are factors of 3890. The greatest factor of 3890 is 3890.
3. What are the Factors of 3898?
Answer: Factors of 3898 are 1, 2, 1949, 3898. There are 4 integers that are factors of 3898. The greatest factor of 3898 is 3898.
4. How to Find the LCM of 3890 and 3898?
Answer:
Least Common Multiple of 3890 and 3898 = 7581610
Step 1: Find the prime factorization of 3890
3890 = 2 x 5 x 389
Step 2: Find the prime factorization of 3898
3898 = 2 x 1949
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7581610 = 2 x 5 x 389 x 1949
Step 4: Therefore, the least common multiple of 3890 and 3898 is 7581610.