21297204

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35207244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 47, 82, 94, 123, 141, 164, 188, 246, 282, 307, 369, 423, 492, 564, 614, 738, 846, 921, 1228, 1476, 1692, 1842, 1927, 2763, 3684, 3854, 5526, 5781, 7708, 11052, 11562, 12587, 14429, 17343, 23124, 25174, 28858, 34686, 37761, 43287, 50348, 57716, 69372, 75522, 86574, 113283, 129861, 151044, 173148, 226566, 259722, 453132, 519444, 591589, 1183178, 1774767, 2366356, 3549534, 5324301, 7099068, 10648602, 21297204]

約数ペア:

[(1, 21297204), (2, 10648602), (3, 7099068), (4, 5324301), (6, 3549534), (9, 2366356), (12, 1774767), (18, 1183178), (36, 591589), (41, 519444), (47, 453132), (82, 259722), (94, 226566), (123, 173148), (141, 151044), (164, 129861), (188, 113283), (246, 86574), (282, 75522), (307, 69372), (369, 57716), (423, 50348), (492, 43287), (564, 37761), (614, 34686), (738, 28858), (846, 25174), (921, 23124), (1228, 17343), (1476, 14429), (1692, 12587), (1842, 11562), (1927, 11052), (2763, 7708), (3684, 5781), (3854, 5526)]