92778
domain: N
Appears in sequences
- Numbers k such that sigma(phi(k)) = phi(sigma(k)).at n=18A033632
- Numbers k such that phi(2*sigma(k)) = 2*sigma(phi(k)).at n=22A067709
- Numbers k such that sigma(phi(k)) divides phi(sigma(k)).at n=32A073858
- Numbers k such that sigma(phi(k)) == phi(sigma(k)) (mod k), that is, A033632(k)/k is an integer.at n=20A092584