求正整数 2 和 n 之间的完全数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	C20250070	20ms	696 KiB		285 Bytes	2024-5-18 12:00:46
AC	BC20260085	26ms	680 KiB		391 Bytes	2024-5-31 16:33:49
AC	BC20260030	154ms	796 KiB		369 Bytes	2024-5-13 11:09:23
AC	CC20260161	156ms	852 KiB	C++17(O2)	383 Bytes	2026-3-21 2:06:32