I divisori di 9001989 sono 16, elencati qui di seguito: 1; 3; 9; 27; 37; 111; 333; 999; 9011; 27033; 81099; 243297; 333407; 1000221; 3000663; 9001989
9001970, 9001971, 9001972, 9001973, 9001974, 9001975, 9001976, 9001977, 9001978, 9001979, 9001980, 9001981, 9001982, 9001983, 9001984, 9001985, 9001986, 9001987, 9001988, 9001990, 9001991, 9001992, 9001993, 9001994, 9001995, 9001996, 9001997, 9001998, 9001999, 9002000, 9002001, 9002002, 9002003, 9002004, 9002005, 9002006, 9002007, 9002008