279269081

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 390997656

約数和(自身を除く): 111728575

約数列:

[1, 7, 13, 17, 37, 41, 49, 91, 119, 221, 259, 287, 289, 481, 533, 629, 637, 697, 833, 1517, 1547, 1813, 2009, 2023, 3367, 3731, 3757, 4403, 4879, 8177, 9061, 10619, 10693, 10829, 11849, 14161, 19721, 23569, 25789, 26117, 26299, 30821, 34153, 57239, 63427, 74333, 74851, 82943, 138047, 139009, 154037, 180523, 184093, 335257, 400673, 438413, 443989, 523957, 580601, 966329, 973063, 1078259, 1263661, 2346799, 3068891, 5699369, 6811441, 7547813, 16427593, 21482237, 39895583, 279269081]

約数ペア:

[(1, 279269081), (7, 39895583), (13, 21482237), (17, 16427593), (37, 7547813), (41, 6811441), (49, 5699369), (91, 3068891), (119, 2346799), (221, 1263661), (259, 1078259), (287, 973063), (289, 966329), (481, 580601), (533, 523957), (629, 443989), (637, 438413), (697, 400673), (833, 335257), (1517, 184093), (1547, 180523), (1813, 154037), (2009, 139009), (2023, 138047), (3367, 82943), (3731, 74851), (3757, 74333), (4403, 63427), (4879, 57239), (8177, 34153), (9061, 30821), (10619, 26299), (10693, 26117), (10829, 25789), (11849, 23569), (14161, 19721)]