85681431

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 148140720

約数和(自身を除く): 62459289

約数列:

[1, 3, 9, 11, 19, 33, 41, 57, 99, 101, 121, 123, 171, 209, 303, 363, 369, 451, 627, 779, 909, 1089, 1111, 1353, 1881, 1919, 2299, 2337, 3333, 4059, 4141, 4961, 5757, 6897, 7011, 8569, 9999, 12221, 12423, 14883, 17271, 20691, 21109, 25707, 36663, 37269, 44649, 45551, 63327, 77121, 78679, 94259, 109989, 136653, 189981, 232199, 236037, 282777, 409959, 501061, 696597, 708111, 848331, 865469, 1503183, 2089791, 2596407, 4509549, 7789221, 9520159, 28560477, 85681431]

約数ペア:

[(1, 85681431), (3, 28560477), (9, 9520159), (11, 7789221), (19, 4509549), (33, 2596407), (41, 2089791), (57, 1503183), (99, 865469), (101, 848331), (121, 708111), (123, 696597), (171, 501061), (209, 409959), (303, 282777), (363, 236037), (369, 232199), (451, 189981), (627, 136653), (779, 109989), (909, 94259), (1089, 78679), (1111, 77121), (1353, 63327), (1881, 45551), (1919, 44649), (2299, 37269), (2337, 36663), (3333, 25707), (4059, 21109), (4141, 20691), (4961, 17271), (5757, 14883), (6897, 12423), (7011, 12221), (8569, 9999)]