128580879

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 215728128

約数和(自身を除く): 87147249

約数列:

[1, 3, 7, 21, 23, 41, 43, 69, 123, 129, 151, 161, 287, 301, 453, 483, 861, 903, 943, 989, 1057, 1763, 2829, 2967, 3171, 3473, 5289, 6191, 6493, 6601, 6923, 10419, 12341, 18573, 19479, 19803, 20769, 24311, 37023, 40549, 43337, 45451, 72933, 121647, 130011, 136353, 142393, 149339, 266213, 283843, 427179, 448017, 798639, 851529, 996751, 1045373, 1863491, 2990253, 3136119, 5590473, 6122899, 18368697, 42860293, 128580879]

約数ペア:

[(1, 128580879), (3, 42860293), (7, 18368697), (21, 6122899), (23, 5590473), (41, 3136119), (43, 2990253), (69, 1863491), (123, 1045373), (129, 996751), (151, 851529), (161, 798639), (287, 448017), (301, 427179), (453, 283843), (483, 266213), (861, 149339), (903, 142393), (943, 136353), (989, 130011), (1057, 121647), (1763, 72933), (2829, 45451), (2967, 43337), (3171, 40549), (3473, 37023), (5289, 24311), (6191, 20769), (6493, 19803), (6601, 19479), (6923, 18573), (10419, 12341)]