The highest common factor (HCF) of 210 and 147 is the largest positive integer that divides both numbers without leaving a remainder. To find the HCF, you can use the Euclidean algorithm, which involves dividing the larger number by the smaller number and then using the remainder as the new divisor in the next iteration. Continuing this process, you find that the HCF of 210 and 147 is 21.
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The highest common factor of the numbers 210 and 330 is 30.
The highest common factor of 60 and 210 is 30.
The GCF is 14.
5. 5 | 210 525 | 42 105
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