1998917838

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{649421}}^1$

素因数の和:649454

約数の個数: 40

約数和(自身を含む): 4714803720

約数和(自身を除く): 2715885882

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 342, 513, 1026, 1539, 3078, 649421, 1298842, 1948263, 3896526, 5844789, 11689578, 12338999, 17534367, 24677998, 35068734, 37016997, 52603101, 74033994, 105206202, 111050991, 222101982, 333152973, 666305946, 999458919, 1998917838]

約数ペア:

[(1, 1998917838), (2, 999458919), (3, 666305946), (6, 333152973), (9, 222101982), (18, 111050991), (19, 105206202), (27, 74033994), (38, 52603101), (54, 37016997), (57, 35068734), (81, 24677998), (114, 17534367), (162, 12338999), (171, 11689578), (342, 5844789), (513, 3896526), (1026, 1948263), (1539, 1298842), (3078, 649421)]