The sum of the unitary divisor function
We establish a new upper bound on the function ?*(n), the sum of all coprime divisors of n. The main result is that ?*(n)? 1.3007n log log n for all n ? 570571.
2015 ◽
Vol 421
(1)
◽
pp. 917-924
◽
2016 ◽
Vol E99.A
(1)
◽
pp. 185-195
2019 ◽
Vol 71
(3)
◽
pp. 1005-1026
◽
Keyword(s):