Nonprime numbers k for which phi(k) + sigma(k) is an integer multiple of the cube of the number of divisors of k.

A055467

Nonprime numbers k for which phi(k) + sigma(k) is an integer multiple of the cube of the number of divisors of k.

Terms

    a(0) =1a(1) =95a(2) =99a(3) =121a(4) =125a(5) =159a(6) =287a(7) =319a(8) =415a(9) =447a(10) =511a(11) =543a(12) =654a(13) =671a(14) =703a(15) =767a(16) =799a(17) =831a(18) =895a(19) =959a(20) =1055a(21) =1119a(22) =1247a(23) =1343a(24) =1390a(25) =1495a(26) =1535a(27) =1631a(28) =1727a(29) =1849

External references