20181000008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{41051}}^1$

素因数の和:41262

約数の個数: 64

約数和(自身を含む): 42414926400

約数和(自身を除く): 22233926392

約数列:

[1, 2, 4, 8, 13, 26, 29, 52, 58, 104, 116, 163, 232, 326, 377, 652, 754, 1304, 1508, 2119, 3016, 4238, 4727, 8476, 9454, 16952, 18908, 37816, 41051, 61451, 82102, 122902, 164204, 245804, 328408, 491608, 533663, 1067326, 1190479, 2134652, 2380958, 4269304, 4761916, 6691313, 9523832, 13382626, 15476227, 26765252, 30952454, 53530504, 61904908, 86987069, 123809816, 173974138, 194048077, 347948276, 388096154, 695896552, 776192308, 1552384616, 2522625001, 5045250002, 10090500004, 20181000008]

約数ペア:

[(1, 20181000008), (2, 10090500004), (4, 5045250002), (8, 2522625001), (13, 1552384616), (26, 776192308), (29, 695896552), (52, 388096154), (58, 347948276), (104, 194048077), (116, 173974138), (163, 123809816), (232, 86987069), (326, 61904908), (377, 53530504), (652, 30952454), (754, 26765252), (1304, 15476227), (1508, 13382626), (2119, 9523832), (3016, 6691313), (4238, 4761916), (4727, 4269304), (8476, 2380958), (9454, 2134652), (16952, 1190479), (18908, 1067326), (37816, 533663), (41051, 491608), (61451, 328408), (82102, 245804), (122902, 164204)]