12978009

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1181}}^1$

素因数の和:1238

約数の個数: 32

約数和(自身を含む): 21559680

約数和(自身を除く): 8581671

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1181, 1221, 3543, 3663, 10629, 10989, 12991, 31887, 38973, 43697, 116919, 131091, 350757, 393273, 480667, 1179819, 1442001, 4326003, 12978009]

約数ペア:

[(1, 12978009), (3, 4326003), (9, 1442001), (11, 1179819), (27, 480667), (33, 393273), (37, 350757), (99, 131091), (111, 116919), (297, 43697), (333, 38973), (407, 31887), (999, 12991), (1181, 10989), (1221, 10629), (3543, 3663)]