Numbers that set records for the number by which they must be multiplied to double the number of divisors.

A138570

Numbers that set records for the number by which they must be multiplied to double the number of divisors.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =12a(4) =60a(5) =120a(6) =840a(7) =2520a(8) =27720a(9) =55440a(10) =720720a(11) =1081080a(12) =2162160a(13) =36756720a(14) =698377680a(15) =16062686640a(16) =48188059920a(17) =160626866400a(18) =240940299600

External references