20354984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 45133200

約数和(自身を除く): 24778216

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 221, 232, 377, 397, 442, 493, 754, 794, 884, 986, 1508, 1588, 1768, 1972, 3016, 3176, 3944, 5161, 6409, 6749, 10322, 11513, 12818, 13498, 20644, 23026, 25636, 26996, 41288, 46052, 51272, 53992, 87737, 92104, 149669, 175474, 195721, 299338, 350948, 391442, 598676, 701896, 782884, 1197352, 1565768, 2544373, 5088746, 10177492, 20354984]

約数ペア:

[(1, 20354984), (2, 10177492), (4, 5088746), (8, 2544373), (13, 1565768), (17, 1197352), (26, 782884), (29, 701896), (34, 598676), (52, 391442), (58, 350948), (68, 299338), (104, 195721), (116, 175474), (136, 149669), (221, 92104), (232, 87737), (377, 53992), (397, 51272), (442, 46052), (493, 41288), (754, 26996), (794, 25636), (884, 23026), (986, 20644), (1508, 13498), (1588, 12818), (1768, 11513), (1972, 10322), (3016, 6749), (3176, 6409), (3944, 5161)]