Smallest number whose set of divisors contains each digit 0-9 at least n times.

Terms

a(0) =108a(1) =540a(2) =1140a(3) =1890a(4) =3420a(5) =5460a(6) =7980a(7) =11760a(8) =16380a(9) =23520a(10) =23520a(11) =23760a(12) =38220a(13) =38220a(14) =41580a(15) =41580a(16) =41580a(17) =71820a(18) =71820a(19) =71820a(20) =83160a(21) =83160a(22) =83160a(23) =124740a(24) =124740a(25) =143640a(26) =166320a(27) =166320a(28) =249480a(29) =249480