31131177

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 56125440

約数和(自身を除く): 24994263

約数列:

[1, 3, 7, 11, 19, 21, 33, 41, 57, 77, 123, 133, 173, 209, 231, 287, 399, 451, 519, 627, 779, 861, 1211, 1353, 1463, 1903, 2337, 3157, 3287, 3633, 4389, 5453, 5709, 7093, 8569, 9471, 9861, 13321, 16359, 21279, 23009, 25707, 36157, 39963, 49651, 59983, 69027, 78023, 108471, 134767, 148953, 179949, 234069, 253099, 404301, 546161, 759297, 943369, 1482437, 1638483, 2830107, 4447311, 10377059, 31131177]

約数ペア:

[(1, 31131177), (3, 10377059), (7, 4447311), (11, 2830107), (19, 1638483), (21, 1482437), (33, 943369), (41, 759297), (57, 546161), (77, 404301), (123, 253099), (133, 234069), (173, 179949), (209, 148953), (231, 134767), (287, 108471), (399, 78023), (451, 69027), (519, 59983), (627, 49651), (779, 39963), (861, 36157), (1211, 25707), (1353, 23009), (1463, 21279), (1903, 16359), (2337, 13321), (3157, 9861), (3287, 9471), (3633, 8569), (4389, 7093), (5453, 5709)]