I divisori di 21988990 sono 16, elencati qui di seguito: 1; 2; 5; 10; 17; 34; 85; 170; 129347; 258694; 646735; 1293470; 2198899; 4397798; 10994495; 21988990
21988971, 21988972, 21988973, 21988974, 21988975, 21988976, 21988977, 21988978, 21988979, 21988980, 21988981, 21988982, 21988983, 21988984, 21988985, 21988986, 21988987, 21988988, 21988989, 21988991, 21988992, 21988993, 21988994, 21988995, 21988996, 21988997, 21988998, 21988999, 21989000, 21989001, 21989002, 21989003, 21989004, 21989005, 21989006, 21989007, 21989008, 21989009