WHOLE CHARACTER
数shù, shǔ, shuò
number; amount; several; a few
数 shù is numbers: 数字 'number', 数量 'amount'. As shǔ it counts one by one: 数一数二 'among the very best', 数落 'to scold'.
ZDIC detailed source: 形声,从攴( pū)、娄声 — the action hand with the old sound piece 娄 (from 婁 lóu).
LEFT: THE OLD SOUND PIECE (FROM 婁 LÓU)
娄lóu
a family name
Modern standalone use is mostly as a surname; kept separate from the historical sound role in 楼.
In 数: left: the old sound piece (from 婁 lóu) A historical sound side: shù, shǔ and shuò have no modern sound relation with lóu.
RIGHT: THE ACTION-HAND SIDE (FROM 攴)
攵pū
the tap/strike hand (from 攴)
The action-hand radical in many characters; not a standalone modern word. Each page shows its role in that character.
In 数: right: the action-hand side (from 攴) Shown with its documented or clearly limited role.