21666736

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:698

約数の個数: 80

約数和(自身を含む): 53996544

約数和(自身を除く): 32329808

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 23, 26, 28, 46, 52, 56, 91, 92, 104, 112, 161, 182, 184, 208, 299, 322, 364, 368, 598, 644, 647, 728, 1196, 1288, 1294, 1456, 2093, 2392, 2576, 2588, 4186, 4529, 4784, 5176, 8372, 8411, 9058, 10352, 14881, 16744, 16822, 18116, 29762, 33488, 33644, 36232, 58877, 59524, 67288, 72464, 104167, 117754, 119048, 134576, 193453, 208334, 235508, 238096, 386906, 416668, 471016, 773812, 833336, 942032, 1354171, 1547624, 1666672, 2708342, 3095248, 5416684, 10833368, 21666736]

約数ペア:

[(1, 21666736), (2, 10833368), (4, 5416684), (7, 3095248), (8, 2708342), (13, 1666672), (14, 1547624), (16, 1354171), (23, 942032), (26, 833336), (28, 773812), (46, 471016), (52, 416668), (56, 386906), (91, 238096), (92, 235508), (104, 208334), (112, 193453), (161, 134576), (182, 119048), (184, 117754), (208, 104167), (299, 72464), (322, 67288), (364, 59524), (368, 58877), (598, 36232), (644, 33644), (647, 33488), (728, 29762), (1196, 18116), (1288, 16822), (1294, 16744), (1456, 14881), (2093, 10352), (2392, 9058), (2576, 8411), (2588, 8372), (4186, 5176), (4529, 4784)]