Any number can be expressed in the form of prime numbers and their products as below.
N = 1, 2a, 3b, 5g, 7d, etc.,
And the number of divisors is given by (1+a)(1+b)(1+g)?
So if the number of divisors is 20 then (1+a)(1+b)(1+g) = 20 , which then gives a = 4, b= 1, g = 1 for the value of N to be least.
There fore N = 240 and its divisors are
1x240, 2x120, 3x80, 4x60, 5x48, 6x40, 8x30, 10x24, 12x20, 15x16
Therefore the some of the divisors is 744
Moderation Team
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