An electric motor (1) is provided with: a stator (2) that includes four split cores (20); and a rotor (3) that includes four magnetic poles. Each split core (20) includes a yoke (21a) and teeth (21b). The lateral surface of the teeth (21b) and the lateral surface of the yoke (21a) on the radial inner side of the stator (2) form an angle θ1 (degrees), and such angle satisfies 90 degrees≤θ1<180 degrees.