@article{1986-bach
,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1986/\allowbreak bach}. Note: see also older version $0}
,author={Eric Bach and Gary Miller and Jeffrey Shallit}
,ISSN={0097--5397}
,journal={SIAM Journal on Computing}
,MR={87k:11139}
,pages={1143--1154}
,title={{Sums of divisors, perfect numbers, and factoring}}
,volume={15}
,year={1986}
}