641256

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 2004480

約数和(自身を除く): 1363224

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 132, 154, 168, 231, 264, 308, 347, 462, 616, 694, 924, 1041, 1388, 1848, 2082, 2429, 2776, 3817, 4164, 4858, 7287, 7634, 8328, 9716, 11451, 14574, 15268, 19432, 22902, 26719, 29148, 30536, 45804, 53438, 58296, 80157, 91608, 106876, 160314, 213752, 320628, 641256]

約数ペア:

[(1, 641256), (2, 320628), (3, 213752), (4, 160314), (6, 106876), (7, 91608), (8, 80157), (11, 58296), (12, 53438), (14, 45804), (21, 30536), (22, 29148), (24, 26719), (28, 22902), (33, 19432), (42, 15268), (44, 14574), (56, 11451), (66, 9716), (77, 8328), (84, 7634), (88, 7287), (132, 4858), (154, 4164), (168, 3817), (231, 2776), (264, 2429), (308, 2082), (347, 1848), (462, 1388), (616, 1041), (694, 924)]