261672009

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{677}}^1\times {\mathrm{6781}}^1$

素因数の和:7480

約数の個数: 16

約数和(自身を含む): 367855680

約数和(自身を除く): 106183671

約数列:

[1, 3, 19, 57, 677, 2031, 6781, 12863, 20343, 38589, 128839, 386517, 4590737, 13772211, 87224003, 261672009]

約数ペア:

[(1, 261672009), (3, 87224003), (19, 13772211), (57, 4590737), (677, 386517), (2031, 128839), (6781, 38589), (12863, 20343)]