261108009

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{311957}}^1$

素因数の和:311997

約数の個数: 16

約数和(自身を含む): 399306240

約数和(自身を除く): 138198231

約数列:

[1, 3, 9, 27, 31, 93, 279, 837, 311957, 935871, 2807613, 8422839, 9670667, 29012001, 87036003, 261108009]

約数ペア:

[(1, 261108009), (3, 87036003), (9, 29012001), (27, 9670667), (31, 8422839), (93, 2807613), (279, 935871), (837, 311957)]