Broughan, Kevin A.Delbourgo, Daniel2017-07-1020172017-07-102017Broughan, K. A., & Delbourgo, D. (2017). Corrigendum: A conjecture of De Koninck regarding particular values of the sum of divisors function. Journal of Number Theory, In press. https://doi.org/10.1016/j.jnt.2017.04.0100022-314Xhttps://hdl.handle.net/10289/11161The proof of Lemma 7 of [1]is made complete by giving the proof of a missing Case (4). This omission was pointed out to the authors by Min Tang, to whom we are most grateful. The same definitions and notation are employed as in [1], and one should replace the first paragraph of the proof by the following argument.application/pdfenThis is an author’s accepted version of an article published in the Journal of Number Theory. © 2017 Elsevier.Journal Article10.1016/j.jnt.2017.04.010