20649288

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:187

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 40936632

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 17, 22, 24, 33, 34, 43, 44, 51, 66, 68, 86, 88, 102, 107, 129, 132, 136, 172, 187, 204, 214, 258, 264, 321, 344, 374, 408, 428, 473, 516, 561, 642, 731, 748, 856, 946, 1032, 1122, 1177, 1284, 1419, 1462, 1496, 1819, 1892, 2193, 2244, 2354, 2568, 2838, 2924, 3531, 3638, 3784, 4386, 4488, 4601, 4708, 5457, 5676, 5848, 7062, 7276, 8041, 8772, 9202, 9416, 10914, 11352, 13803, 14124, 14552, 16082, 17544, 18404, 20009, 21828, 24123, 27606, 28248, 32164, 36808, 40018, 43656, 48246, 50611, 55212, 60027, 64328, 78217, 80036, 96492, 101222, 110424, 120054, 151833, 156434, 160072, 192984, 202444, 234651, 240108, 303666, 312868, 404888, 469302, 480216, 607332, 625736, 860387, 938604, 1214664, 1720774, 1877208, 2581161, 3441548, 5162322, 6883096, 10324644, 20649288]

約数ペア:

[(1, 20649288), (2, 10324644), (3, 6883096), (4, 5162322), (6, 3441548), (8, 2581161), (11, 1877208), (12, 1720774), (17, 1214664), (22, 938604), (24, 860387), (33, 625736), (34, 607332), (43, 480216), (44, 469302), (51, 404888), (66, 312868), (68, 303666), (86, 240108), (88, 234651), (102, 202444), (107, 192984), (129, 160072), (132, 156434), (136, 151833), (172, 120054), (187, 110424), (204, 101222), (214, 96492), (258, 80036), (264, 78217), (321, 64328), (344, 60027), (374, 55212), (408, 50611), (428, 48246), (473, 43656), (516, 40018), (561, 36808), (642, 32164), (731, 28248), (748, 27606), (856, 24123), (946, 21828), (1032, 20009), (1122, 18404), (1177, 17544), (1284, 16082), (1419, 14552), (1462, 14124), (1496, 13803), (1819, 11352), (1892, 10914), (2193, 9416), (2244, 9202), (2354, 8772), (2568, 8041), (2838, 7276), (2924, 7062), (3531, 5848), (3638, 5676), (3784, 5457), (4386, 4708), (4488, 4601)]