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NDivisibility II (Posted on 20111217) 

Consider four base ten positive integers 42^{98}, 70^{70}, 105^{42} and 154^{28} – and, determine the total number of positive integers dividing:
(I) At least one of the four given numbers.
(II) At least two of the four given numbers.
(III) At least three of the four given numbers.
(IV) Each of the four given numbers.
re: solution

Comment 5 of 5 

(In reply to solution by Charlie)
Nicely done, Charlie!


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