I divisori di 13001991 sono 8, elencati qui di seguito: 1; 3; 17; 51; 254941; 764823; 4333997; 13001991
13001972, 13001973, 13001974, 13001975, 13001976, 13001977, 13001978, 13001979, 13001980, 13001981, 13001982, 13001983, 13001984, 13001985, 13001986, 13001987, 13001988, 13001989, 13001990, 13001992, 13001993, 13001994, 13001995, 13001996, 13001997, 13001998, 13001999, 13002000, 13002001, 13002002, 13002003, 13002004, 13002005, 13002006, 13002007, 13002008, 13002009, 13002010