Numbers m such that the GCD of the x's that satisfy sigma(x) = m is 4.

Terms

a(0) =7a(1) =210a(2) =378a(3) =630a(4) =1904a(5) =3570a(6) =6188a(7) =6510a(8) =7154a(9) =9296a(10) =9800a(11) =10220a(12) =12446a(13) =13664a(14) =14378a(15) =17654a(16) =17780a(17) =18536a(18) =19110a(19) =19376a(20) =19530a(21) =20034a(22) =20580a(23) =21266a(24) =23240a(25) =23310a(26) =24150a(27) =24584a(28) =25298a(29) =26754