128717920

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:464

約数の個数: 96

約数和(自身を含む): 317937312

約数和(自身を除く): 189219392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 53, 80, 86, 106, 160, 172, 212, 215, 265, 344, 353, 424, 430, 530, 688, 706, 848, 860, 1060, 1376, 1412, 1696, 1720, 1765, 2120, 2279, 2824, 3440, 3530, 4240, 4558, 5648, 6880, 7060, 8480, 9116, 11296, 11395, 14120, 15179, 18232, 18709, 22790, 28240, 30358, 36464, 37418, 45580, 56480, 60716, 72928, 74836, 75895, 91160, 93545, 121432, 149672, 151790, 182320, 187090, 242864, 299344, 303580, 364640, 374180, 485728, 598688, 607160, 748360, 804487, 1214320, 1496720, 1608974, 2428640, 2993440, 3217948, 4022435, 6435896, 8044870, 12871792, 16089740, 25743584, 32179480, 64358960, 128717920]

約数ペア:

[(1, 128717920), (2, 64358960), (4, 32179480), (5, 25743584), (8, 16089740), (10, 12871792), (16, 8044870), (20, 6435896), (32, 4022435), (40, 3217948), (43, 2993440), (53, 2428640), (80, 1608974), (86, 1496720), (106, 1214320), (160, 804487), (172, 748360), (212, 607160), (215, 598688), (265, 485728), (344, 374180), (353, 364640), (424, 303580), (430, 299344), (530, 242864), (688, 187090), (706, 182320), (848, 151790), (860, 149672), (1060, 121432), (1376, 93545), (1412, 91160), (1696, 75895), (1720, 74836), (1765, 72928), (2120, 60716), (2279, 56480), (2824, 45580), (3440, 37418), (3530, 36464), (4240, 30358), (4558, 28240), (5648, 22790), (6880, 18709), (7060, 18232), (8480, 15179), (9116, 14120), (11296, 11395)]