Question 921610

{{{18 = highlight(2)*highlight(3)*3}}}  ({{{3}}} prime factors, {{{2}}} distinct)

{{{90 = highlight(2)*highlight(3)*3*5}}}  ({{{4}}} prime factors, {{{3}}} distinct)

{{{30 = highlight(2)*highlight(3)*5}}}  ({{{3}}} distinct prime factors)

{{{gcd(18, 90, 30)=2*3=highlight(6)}}}