The answer is three (3).48 = 2x3x2x2x2 (prime factors)72 = 3x3x2x2x2 (prime factors)
LCM is 648, which is the multiple of the highest power of prime factors in the given numbers (23 x 34).
Prime factors of 390 are 2, 3, 5, and 13Prime factors of 72 are 23 and 32The LCM of 390 and 72 is the product of the highest power of each prime factor of the given numbers: 23 x 32 x 5 x 13 = 4680
Highest common factor is 18
The prime factors for 72 are: 2, 3
Apart from 1, all of the other factors of 72 are multiples of prime factors.
There is no such thing as a 'highest common multiple', but the least common multiple or LCM can be found using prime numbers. The LCM of the given numbers is the product of all different prime factors to their greatest power. If there are no exponents, the greatest power of the prime factors is 1 and each different prime factor is used in the multiplication:prime factors of 210 are 2 x 3 x 5 x 7;prime factors of 147 are 3 x 72;the LCM of 210 and 147 is 2 x 3 x 5 x 72 = 1470
There are only 2 prime factors for 72. They are 2 and 3, since 72 = 2X2X2X3X3. Therefore, the 2 prime factors for 72 are 2 and 3.
The prime factors of 72 are 2 and 3.
There are two prime factors of 72: 2 and 3.
As a product of its prime factors in exponents: 23*32 = 72
32 and 72