macOS Big Sur - Screenshots are bigger than actual screen resolution

In a MacBook Pro 13" M1, I do "Command + Shift + 3" to capture the screen, then I see the resolution of the taken image and I see that it has 2880 × 1800 pixels.

How can this be possible when, as far as I know, the MacBook Pro 13" M1 has a display resolution of 2560 × 1600?