A212608 Deficient numbers n having a companion m > n such that sigma(n)/n = sigma(m)/m.

135, 3375, 1485, 2295, 2565, 3105, 3915, 4185, 4995, 5535, 5805, 6345, 25137, 7155, 7965, 8235, 9045, 9585, 9855, 10665, 11205, 12015, 13095, 13635, 13905, 14445, 14715, 43875, 15255, 16335, 17145, 17685, 18495, 18765, 57375, 20115, 20385, 21195, 64125

Offset: 1

Author

T. D. Noe, May 23 2012

Keywords

• nonn

Comments

These numbers are listed in the order that their companions were found. All these numbers appear to have only one companion, which appear in A212609.

Crossrefs

Cf. A211680 (pairs of deficient numbers).