divizibil cu 4 inseamna ca numarul format de ultimele 2 cifre este divizibil cu 4
23x
232,236
2x1x
2112,2116,2212,2216,2312,2316,2412,2416,2512,2516,2612,2616,2712, 2716,2812,2816,2912,2916
4xx2
4112,4332,4552,4772,4992
3x2y
3024,3028,3120,3124,3128,3220,3224,3228,3320,3324,3328,3420,3428,3520,3524, 3528,3620,3624,3628,3720,3724,3728,3820,3824,3920,3924,3928
