>>126949232
https://github.com/instaloader/instaloader
Plenty of solutions for this. Any good one will download the source from Instagram. Not all images will be 1440, some may be uploaded at a lower resolution and handled differently by Instagram. Either way, the source is the source.

>>126947853
Ok, I'll admit it. I used to be a Wonyoung denier because she's a disgusting plastic bimbo but she bogged so hard that she transcended above all. Praise Wonyoung.