Broughan, Kevin A.2009-02-222009-02-222002Broughan, K.A. (2002). Restricted divisor sums. Acta Arithmetica, 101(2), 105-114.https://hdl.handle.net/10289/2036There is a body of work in the literature on various restricted sums of the number of divisors of an integer function including that described in [2-9, 11] and summarised in Section 2 below.application/pdfenThis article has been published in the journal: Acta Arithmetica. © 2002 Acta Arithmetica. Used with Permission.Dirichlet seriesdivisor sumclass numberinteger square rootRestricted divisor sumsJournal Article10.4064/aa101-2-2