Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/62307
Title: Problems in this Issue
Keywords: Problem
This issue
Issue Date: 2021
Series/Report no.: Tạp chí Toán học & Tuổi trẻ;Số 528 .- Tr.22-23
Abstract: Problem T1/528 (For 6 ͭ ͪ grade Assume that A is a natural number which has two prime factors p and q only. Let S be the sum of all positive factors of A. Show that S<2A. This is one of the problems in this Issue.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/62307
ISSN: 2734-9284
Appears in Collections:Toán học và tuổi trẻ

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