Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7824 and 7830 the smallest integer that is 10210320 that is divisible by both numbers.
Least Common Multiple (LCM) of 7824 and 7830 is 10210320.
LCM(7824,7830) = 10210320
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 7824 and 7830. First we will calculate the prime factors of 7824 and 7830.
Prime Factorization of 7824
2 | 7824 |
2 | 3912 |
2 | 1956 |
2 | 978 |
3 | 489 |
163 | 163 |
1 |
Prime factors of 7824 are 2, 3,163. Prime factorization of 7824 in exponential form is:
7824 = 24×31×1631
Prime Factorization of 7830
2 | 7830 |
3 | 3915 |
3 | 1305 |
3 | 435 |
5 | 145 |
29 | 29 |
1 |
Prime factors of 7830 are 2, 3, 5,29. Prime factorization of 7830 in exponential form is:
7830 = 21×33×51×291
Now multiplying the highest exponent prime factors to calculate the LCM of 7824 and 7830.
LCM(7824,7830) = 24×33×51×291×1631
LCM(7824,7830) = 10210320
Factors of 7824
List of positive integer factors of 7824 that divides 7824 without a remainder.
1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 163, 326, 489, 652, 978, 1304, 1956, 2608, 3912, 7824
Factors of 7830
List of positive integer factors of 7830 that divides 7830 without a remainder.
1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 45, 54, 58, 87, 90, 135, 145, 174, 261, 270, 290, 435, 522, 783, 870, 1305, 1566, 2610, 3915, 7830
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7824 and 7830, than apply into the LCM equation.
GCF(7824,7830) = 6
LCM(7824,7830) = ( 7824 × 7830) / 6
LCM(7824,7830) = 61261920 / 6
LCM(7824,7830) = 10210320
(i) The LCM of 7830 and 7824 is associative
LCM of 7824 and 7830 = LCM of 7830 and 7824
1. What is the LCM of 7824 and 7830?
Answer: LCM of 7824 and 7830 is 10210320.
2. What are the Factors of 7824?
Answer: Factors of 7824 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 163, 326, 489, 652, 978, 1304, 1956, 2608, 3912, 7824. There are 20 integers that are factors of 7824. The greatest factor of 7824 is 7824.
3. What are the Factors of 7830?
Answer: Factors of 7830 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 45, 54, 58, 87, 90, 135, 145, 174, 261, 270, 290, 435, 522, 783, 870, 1305, 1566, 2610, 3915, 7830. There are 32 integers that are factors of 7830. The greatest factor of 7830 is 7830.
4. How to Find the LCM of 7824 and 7830?
Answer:
Least Common Multiple of 7824 and 7830 = 10210320
Step 1: Find the prime factorization of 7824
7824 = 2 x 2 x 2 x 2 x 3 x 163
Step 2: Find the prime factorization of 7830
7830 = 2 x 3 x 3 x 3 x 5 x 29
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 10210320 = 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 29 x 163
Step 4: Therefore, the least common multiple of 7824 and 7830 is 10210320.