256465916

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^2\times {\mathrm{79}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 549749760

約数和(自身を除く): 293283844

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 71, 79, 92, 142, 158, 161, 284, 316, 322, 497, 553, 644, 994, 1106, 1633, 1817, 1988, 2212, 3266, 3634, 5041, 5609, 6532, 7268, 10082, 11218, 11431, 12719, 20164, 22436, 22862, 25438, 35287, 39263, 45724, 50876, 70574, 78526, 115943, 129007, 141148, 157052, 231886, 258014, 398239, 463772, 516028, 796478, 811601, 903049, 1592956, 1623202, 1806098, 2787673, 3246404, 3612196, 5575346, 9159497, 11150692, 18318994, 36637988, 64116479, 128232958, 256465916]

約数ペア:

[(1, 256465916), (2, 128232958), (4, 64116479), (7, 36637988), (14, 18318994), (23, 11150692), (28, 9159497), (46, 5575346), (71, 3612196), (79, 3246404), (92, 2787673), (142, 1806098), (158, 1623202), (161, 1592956), (284, 903049), (316, 811601), (322, 796478), (497, 516028), (553, 463772), (644, 398239), (994, 258014), (1106, 231886), (1633, 157052), (1817, 141148), (1988, 129007), (2212, 115943), (3266, 78526), (3634, 70574), (5041, 50876), (5609, 45724), (6532, 39263), (7268, 35287), (10082, 25438), (11218, 22862), (11431, 22436), (12719, 20164)]