81473560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 220631040

約数和(自身を除く): 139157480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 47, 56, 70, 82, 94, 140, 151, 164, 188, 205, 235, 280, 287, 302, 328, 329, 376, 410, 470, 574, 604, 658, 755, 820, 940, 1057, 1148, 1208, 1316, 1435, 1510, 1640, 1645, 1880, 1927, 2114, 2296, 2632, 2870, 3020, 3290, 3854, 4228, 5285, 5740, 6040, 6191, 6580, 7097, 7708, 8456, 9635, 10570, 11480, 12382, 13160, 13489, 14194, 15416, 19270, 21140, 24764, 26978, 28388, 30955, 35485, 38540, 42280, 43337, 49528, 49679, 53956, 56776, 61910, 67445, 70970, 77080, 86674, 99358, 107912, 123820, 134890, 141940, 173348, 198716, 216685, 247640, 248395, 269780, 283880, 290977, 346696, 397432, 433370, 496790, 539560, 581954, 866740, 993580, 1163908, 1454885, 1733480, 1987160, 2036839, 2327816, 2909770, 4073678, 5819540, 8147356, 10184195, 11639080, 16294712, 20368390, 40736780, 81473560]

約数ペア:

[(1, 81473560), (2, 40736780), (4, 20368390), (5, 16294712), (7, 11639080), (8, 10184195), (10, 8147356), (14, 5819540), (20, 4073678), (28, 2909770), (35, 2327816), (40, 2036839), (41, 1987160), (47, 1733480), (56, 1454885), (70, 1163908), (82, 993580), (94, 866740), (140, 581954), (151, 539560), (164, 496790), (188, 433370), (205, 397432), (235, 346696), (280, 290977), (287, 283880), (302, 269780), (328, 248395), (329, 247640), (376, 216685), (410, 198716), (470, 173348), (574, 141940), (604, 134890), (658, 123820), (755, 107912), (820, 99358), (940, 86674), (1057, 77080), (1148, 70970), (1208, 67445), (1316, 61910), (1435, 56776), (1510, 53956), (1640, 49679), (1645, 49528), (1880, 43337), (1927, 42280), (2114, 38540), (2296, 35485), (2632, 30955), (2870, 28388), (3020, 26978), (3290, 24764), (3854, 21140), (4228, 19270), (5285, 15416), (5740, 14194), (6040, 13489), (6191, 13160), (6580, 12382), (7097, 11480), (7708, 10570), (8456, 9635)]