TY  - JOUR
AU  - Nguyen Xuan Tho
TI  - What positive integers n can be presented in the form n = (x + y + z)(1/x + 1/y + 1/z)?
JO  - Annales mathematicae et informaticae
PY  - 2021
SP  - 141
EP  - 146
VL  - 54
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.33039/ami.2021.04.005/
DO  - 10.33039/ami.2021.04.005
LA  - en
ID  - AMI_2021_54_a11
ER  -