19898010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:324

約数の個数: 96

約数和(自身を含む): 57283200

約数和(自身を除く): 37385190

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 101, 110, 165, 198, 199, 202, 303, 330, 398, 495, 505, 597, 606, 909, 990, 995, 1010, 1111, 1194, 1515, 1791, 1818, 1990, 2189, 2222, 2985, 3030, 3333, 3582, 4378, 4545, 5555, 5970, 6567, 6666, 8955, 9090, 9999, 10945, 11110, 13134, 16665, 17910, 19701, 19998, 20099, 21890, 32835, 33330, 39402, 40198, 49995, 60297, 65670, 98505, 99990, 100495, 120594, 180891, 197010, 200990, 221089, 301485, 361782, 442178, 602970, 663267, 904455, 1105445, 1326534, 1808910, 1989801, 2210890, 3316335, 3979602, 6632670, 9949005, 19898010]

約数ペア:

[(1, 19898010), (2, 9949005), (3, 6632670), (5, 3979602), (6, 3316335), (9, 2210890), (10, 1989801), (11, 1808910), (15, 1326534), (18, 1105445), (22, 904455), (30, 663267), (33, 602970), (45, 442178), (55, 361782), (66, 301485), (90, 221089), (99, 200990), (101, 197010), (110, 180891), (165, 120594), (198, 100495), (199, 99990), (202, 98505), (303, 65670), (330, 60297), (398, 49995), (495, 40198), (505, 39402), (597, 33330), (606, 32835), (909, 21890), (990, 20099), (995, 19998), (1010, 19701), (1111, 17910), (1194, 16665), (1515, 13134), (1791, 11110), (1818, 10945), (1990, 9999), (2189, 9090), (2222, 8955), (2985, 6666), (3030, 6567), (3333, 5970), (3582, 5555), (4378, 4545)]