a(n) is the smallest number with exactly n divisors d such that sigma(d)/d is an integer.
A338405
a(n) is the smallest number with exactly n divisors d such that sigma(d)/d is an integer.
Terms
- a(0) =1a(1) =6a(2) =84a(3) =672a(4) =3360a(5) =30240a(6) =393120a(7) =12186720a(8) =164989440a(9) =14024102400a(10) =2144862720a(11) =182313331200
External references
- oeis: A338405