778867160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{6689}}^1$

素因数の和:6812

約数の個数: 64

約数和(自身を含む): 1820750400

約数和(自身を除く): 1041883240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 142, 164, 205, 284, 328, 355, 410, 568, 710, 820, 1420, 1640, 2840, 2911, 5822, 6689, 11644, 13378, 14555, 23288, 26756, 29110, 33445, 53512, 58220, 66890, 116440, 133780, 267560, 274249, 474919, 548498, 949838, 1096996, 1371245, 1899676, 2193992, 2374595, 2742490, 3799352, 4749190, 5484980, 9498380, 10969960, 18996760, 19471679, 38943358, 77886716, 97358395, 155773432, 194716790, 389433580, 778867160]

約数ペア:

[(1, 778867160), (2, 389433580), (4, 194716790), (5, 155773432), (8, 97358395), (10, 77886716), (20, 38943358), (40, 19471679), (41, 18996760), (71, 10969960), (82, 9498380), (142, 5484980), (164, 4749190), (205, 3799352), (284, 2742490), (328, 2374595), (355, 2193992), (410, 1899676), (568, 1371245), (710, 1096996), (820, 949838), (1420, 548498), (1640, 474919), (2840, 274249), (2911, 267560), (5822, 133780), (6689, 116440), (11644, 66890), (13378, 58220), (14555, 53512), (23288, 33445), (26756, 29110)]