20579265

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:109

約数の個数: 120

約数和(自身を含む): 46182312

約数和(自身を除く): 25603047

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 49, 51, 61, 63, 81, 85, 105, 119, 135, 147, 153, 183, 189, 245, 255, 305, 315, 357, 405, 427, 441, 459, 549, 567, 595, 735, 765, 833, 915, 945, 1037, 1071, 1281, 1323, 1377, 1647, 1785, 2135, 2205, 2295, 2499, 2745, 2835, 2989, 3111, 3213, 3843, 3969, 4165, 4941, 5185, 5355, 6405, 6615, 6885, 7259, 7497, 8235, 8967, 9333, 9639, 11529, 12495, 14945, 15555, 16065, 19215, 19845, 21777, 22491, 24705, 26901, 27999, 34587, 36295, 37485, 44835, 46665, 48195, 50813, 57645, 65331, 67473, 80703, 83997, 108885, 112455, 134505, 139995, 152439, 172935, 195993, 242109, 254065, 326655, 337365, 403515, 419985, 457317, 587979, 762195, 979965, 1210545, 1371951, 2286585, 2939895, 4115853, 6859755, 20579265]

約数ペア:

[(1, 20579265), (3, 6859755), (5, 4115853), (7, 2939895), (9, 2286585), (15, 1371951), (17, 1210545), (21, 979965), (27, 762195), (35, 587979), (45, 457317), (49, 419985), (51, 403515), (61, 337365), (63, 326655), (81, 254065), (85, 242109), (105, 195993), (119, 172935), (135, 152439), (147, 139995), (153, 134505), (183, 112455), (189, 108885), (245, 83997), (255, 80703), (305, 67473), (315, 65331), (357, 57645), (405, 50813), (427, 48195), (441, 46665), (459, 44835), (549, 37485), (567, 36295), (595, 34587), (735, 27999), (765, 26901), (833, 24705), (915, 22491), (945, 21777), (1037, 19845), (1071, 19215), (1281, 16065), (1323, 15555), (1377, 14945), (1647, 12495), (1785, 11529), (2135, 9639), (2205, 9333), (2295, 8967), (2499, 8235), (2745, 7497), (2835, 7259), (2989, 6885), (3111, 6615), (3213, 6405), (3843, 5355), (3969, 5185), (4165, 4941)]