21687708

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{307}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 60092032

約数和(自身を除く): 38404324

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 42, 58, 84, 87, 116, 174, 203, 307, 348, 406, 609, 614, 812, 841, 921, 1218, 1228, 1682, 1842, 2149, 2436, 2523, 3364, 3684, 4298, 5046, 5887, 6447, 8596, 8903, 10092, 11774, 12894, 17661, 17806, 23548, 25788, 26709, 35322, 35612, 53418, 62321, 70644, 106836, 124642, 186963, 249284, 258187, 373926, 516374, 747852, 774561, 1032748, 1549122, 1807309, 3098244, 3614618, 5421927, 7229236, 10843854, 21687708]

約数ペア:

[(1, 21687708), (2, 10843854), (3, 7229236), (4, 5421927), (6, 3614618), (7, 3098244), (12, 1807309), (14, 1549122), (21, 1032748), (28, 774561), (29, 747852), (42, 516374), (58, 373926), (84, 258187), (87, 249284), (116, 186963), (174, 124642), (203, 106836), (307, 70644), (348, 62321), (406, 53418), (609, 35612), (614, 35322), (812, 26709), (841, 25788), (921, 23548), (1218, 17806), (1228, 17661), (1682, 12894), (1842, 11774), (2149, 10092), (2436, 8903), (2523, 8596), (3364, 6447), (3684, 5887), (4298, 5046)]