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On quasi-imperfect numbers with at most four distinct prime divisors

Published Online: 2021-06-14

Published Print: 2021-06

Authors

Sun, Cui-Fang https://orcid.org/0000-0001-7492-0780
He, Zhao-Cheng

Tao, Tian-Tian
Funding

Funding for this research was provided by:

National Natural Science Foundation of China (11471017)

the Natural Science Foundation of Anhui Higher Education Institutions of China (KJ2018A0304)
License Information

Text and Data Mining valid from 2021-06-01

Version of Record valid from 2021-06-01
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Article History

Received: 29 March 2018

Accepted: 6 May 2020

First Online: 14 June 2021

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