8990667

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 16894800

約数和(自身を除く): 7904133

約数列:

[1, 3, 7, 9, 19, 21, 29, 37, 49, 57, 63, 87, 111, 133, 147, 171, 203, 259, 261, 333, 399, 441, 551, 609, 703, 777, 931, 1073, 1197, 1421, 1653, 1813, 1827, 2109, 2331, 2793, 3219, 3857, 4263, 4921, 4959, 5439, 6327, 7511, 8379, 9657, 11571, 12789, 14763, 16317, 20387, 22533, 26999, 34447, 34713, 44289, 52577, 61161, 67599, 80997, 103341, 142709, 157731, 183483, 242991, 310023, 428127, 473193, 998963, 1284381, 2996889, 8990667]

約数ペア:

[(1, 8990667), (3, 2996889), (7, 1284381), (9, 998963), (19, 473193), (21, 428127), (29, 310023), (37, 242991), (49, 183483), (57, 157731), (63, 142709), (87, 103341), (111, 80997), (133, 67599), (147, 61161), (171, 52577), (203, 44289), (259, 34713), (261, 34447), (333, 26999), (399, 22533), (441, 20387), (551, 16317), (609, 14763), (703, 12789), (777, 11571), (931, 9657), (1073, 8379), (1197, 7511), (1421, 6327), (1653, 5439), (1813, 4959), (1827, 4921), (2109, 4263), (2331, 3857), (2793, 3219)]