8556921

素因数分解:

$3^4\times {\mathrm{149}}^1\times {\mathrm{709}}^1$

素因数の和:870

約数の個数: 20

約数和(自身を含む): 12886500

約数和(自身を除く): 4329579

約数列:

[1, 3, 9, 27, 81, 149, 447, 709, 1341, 2127, 4023, 6381, 12069, 19143, 57429, 105641, 316923, 950769, 2852307, 8556921]

約数ペア:

[(1, 8556921), (3, 2852307), (9, 950769), (27, 316923), (81, 105641), (149, 57429), (447, 19143), (709, 12069), (1341, 6381), (2127, 4023)]