Quasiperfect numbers

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Acta Arithmetica / All issues

H. Abbott, C. Aull, Ezra Brown, D. Suryanarayana Acta Arithmetica 22 (1973), 439-447 DOI: 10.4064/aa-22-4-439-447