Numbers m such that sigma(m) = 2*m - omega(m), where omega(m) is the number of distinct prime divisors of m.

A392668

Numbers m such that sigma(m) = 2*m - omega(m), where omega(m) is the number of distinct prime divisors of m.

Terms

    a(0) =2a(1) =4a(2) =8a(3) =10a(4) =16a(5) =32a(6) =64a(7) =128a(8) =136a(9) =256a(10) =512a(11) =1024a(12) =2048a(13) =4096a(14) =8192a(15) =16384a(16) =32768a(17) =32896a(18) =65536a(19) =131072a(20) =262144a(21) =524288a(22) =1048576a(23) =2097152a(24) =4194304a(25) =8388608a(26) =16777216a(27) =33554432a(28) =67108864a(29) =134217728

External references