Numbers that are not powers of primes (A024619) whose harmonic mean of their proper unitary divisors is an integer.
A335270
Numbers that are not powers of primes (A024619) whose harmonic mean of their proper unitary divisors is an integer.
Terms
- a(0) =228a(1) =1645a(2) =7725a(3) =88473a(4) =20295895122a(5) =22550994580
External references
- oeis: A335270