Numbers n such that sigma(n)/phi(n) = 25/4, where sigma = A000203, phi = A000010.

Terms

a(0) =760a(1) =11020a(2) =18088a(3) =21112a(4) =58206a(5) =65262a(6) =71630a(7) =100280a(8) =123424a(9) =142688a(10) =262276a(11) =303212a(12) =332710a(13) =630344a(14) =679070a(15) =761390a(16) =1265096a(17) =1369120a(18) =1454060a(19) =1454260a(20) =1462552a(21) =1704794a(22) =2185750a(23) =2386664a(24) =2627548a(25) =2783872a(26) =2786056a(27) =2909380a(28) =2927848a(29) =5207680