I divisori di 201990 sono 16, elencati qui di seguito: 1; 2; 3; 5; 6; 10; 15; 30; 6733; 13466; 20199; 33665; 40398; 67330; 100995; 201990
201971, 201972, 201973, 201974, 201975, 201976, 201977, 201978, 201979, 201980, 201981, 201982, 201983, 201984, 201985, 201986, 201987, 201988, 201989, 201991, 201992, 201993, 201994, 201995, 201996, 201997, 201998, 201999, 202000, 202001, 202002, 202003, 202004, 202005, 202006, 202007, 202008, 202009