209898459

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{167}}^1\times {\mathrm{263}}^1$

素因数の和:501

約数の個数: 40

約数和(自身を含む): 321995520

約数和(自身を除く): 112097061

約数列:

[1, 3, 9, 27, 59, 81, 167, 177, 263, 501, 531, 789, 1503, 1593, 2367, 4509, 4779, 7101, 9853, 13527, 15517, 21303, 29559, 43921, 46551, 88677, 131763, 139653, 266031, 395289, 418959, 798093, 1185867, 1256877, 2591339, 3557601, 7774017, 23322051, 69966153, 209898459]

約数ペア:

[(1, 209898459), (3, 69966153), (9, 23322051), (27, 7774017), (59, 3557601), (81, 2591339), (167, 1256877), (177, 1185867), (263, 798093), (501, 418959), (531, 395289), (789, 266031), (1503, 139653), (1593, 131763), (2367, 88677), (4509, 46551), (4779, 43921), (7101, 29559), (9853, 21303), (13527, 15517)]