20080264

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{409}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 42176700

約数和(自身を除く): 22096436

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 361, 409, 646, 722, 818, 1292, 1444, 1636, 2584, 2888, 3272, 6137, 6953, 7771, 12274, 13906, 15542, 24548, 27812, 31084, 49096, 55624, 62168, 132107, 147649, 264214, 295298, 528428, 590596, 1056856, 1181192, 2510033, 5020066, 10040132, 20080264]

約数ペア:

[(1, 20080264), (2, 10040132), (4, 5020066), (8, 2510033), (17, 1181192), (19, 1056856), (34, 590596), (38, 528428), (68, 295298), (76, 264214), (136, 147649), (152, 132107), (323, 62168), (361, 55624), (409, 49096), (646, 31084), (722, 27812), (818, 24548), (1292, 15542), (1444, 13906), (1636, 12274), (2584, 7771), (2888, 6953), (3272, 6137)]