20282020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1$

素因数の和:94

約数の個数: 108

約数和(自身を含む): 51447060

約数和(自身を除く): 31165040

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 29, 34, 44, 55, 58, 68, 85, 110, 116, 121, 145, 170, 187, 220, 242, 289, 290, 319, 340, 374, 484, 493, 578, 580, 605, 638, 748, 935, 986, 1156, 1210, 1276, 1445, 1595, 1870, 1972, 2057, 2420, 2465, 2890, 3179, 3190, 3509, 3740, 4114, 4930, 5423, 5780, 6358, 6380, 7018, 8228, 8381, 9860, 10285, 10846, 12716, 14036, 15895, 16762, 17545, 20570, 21692, 27115, 31790, 33524, 34969, 35090, 41140, 41905, 54230, 59653, 63580, 69938, 70180, 83810, 92191, 108460, 119306, 139876, 167620, 174845, 184382, 238612, 298265, 349690, 368764, 460955, 596530, 699380, 921910, 1014101, 1193060, 1843820, 2028202, 4056404, 5070505, 10141010, 20282020]

約数ペア:

[(1, 20282020), (2, 10141010), (4, 5070505), (5, 4056404), (10, 2028202), (11, 1843820), (17, 1193060), (20, 1014101), (22, 921910), (29, 699380), (34, 596530), (44, 460955), (55, 368764), (58, 349690), (68, 298265), (85, 238612), (110, 184382), (116, 174845), (121, 167620), (145, 139876), (170, 119306), (187, 108460), (220, 92191), (242, 83810), (289, 70180), (290, 69938), (319, 63580), (340, 59653), (374, 54230), (484, 41905), (493, 41140), (578, 35090), (580, 34969), (605, 33524), (638, 31790), (748, 27115), (935, 21692), (986, 20570), (1156, 17545), (1210, 16762), (1276, 15895), (1445, 14036), (1595, 12716), (1870, 10846), (1972, 10285), (2057, 9860), (2420, 8381), (2465, 8228), (2890, 7018), (3179, 6380), (3190, 6358), (3509, 5780), (3740, 5423), (4114, 4930)]