I divisori di 9801980 sono 24, elencati qui di seguito: 1; 2; 4; 5; 10; 20; 257; 514; 1028; 1285; 1907; 2570; 3814; 5140; 7628; 9535; 19070; 38140; 490099; 980198; 1960396; 2450495; 4900990; 9801980
9801961, 9801962, 9801963, 9801964, 9801965, 9801966, 9801967, 9801968, 9801969, 9801970, 9801971, 9801972, 9801973, 9801974, 9801975, 9801976, 9801977, 9801978, 9801979, 9801981, 9801982, 9801983, 9801984, 9801985, 9801986, 9801987, 9801988, 9801989, 9801990, 9801991, 9801992, 9801993, 9801994, 9801995, 9801996, 9801997, 9801998, 9801999