21000921627

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1367}}^1\times {\mathrm{1871}}^1$

素因数の和:3288

約数の個数: 64

約数和(自身を含む): 35401826304

約数和(自身を除く): 14400904677

約数列:

[1, 3, 7, 17, 21, 23, 51, 69, 119, 161, 357, 391, 483, 1173, 1367, 1871, 2737, 4101, 5613, 8211, 9569, 13097, 23239, 28707, 31441, 31807, 39291, 43033, 69717, 94323, 95421, 129099, 162673, 220087, 222649, 301231, 488019, 534497, 660261, 667947, 731561, 903693, 1603491, 2194683, 2557657, 3741479, 5120927, 7672971, 11224437, 15362781, 17903599, 43480169, 53710797, 58826111, 130440507, 176478333, 304361183, 411782777, 913083549, 1000043887, 1235348331, 3000131661, 7000307209, 21000921627]

約数ペア:

[(1, 21000921627), (3, 7000307209), (7, 3000131661), (17, 1235348331), (21, 1000043887), (23, 913083549), (51, 411782777), (69, 304361183), (119, 176478333), (161, 130440507), (357, 58826111), (391, 53710797), (483, 43480169), (1173, 17903599), (1367, 15362781), (1871, 11224437), (2737, 7672971), (4101, 5120927), (5613, 3741479), (8211, 2557657), (9569, 2194683), (13097, 1603491), (23239, 903693), (28707, 731561), (31441, 667947), (31807, 660261), (39291, 534497), (43033, 488019), (69717, 301231), (94323, 222649), (95421, 220087), (129099, 162673)]