20608821

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{281}}^2$

素因数の和:597

約数の個数: 18

約数和(自身を含む): 30904770

約数和(自身を除く): 10295949

約数列:

[1, 3, 9, 29, 87, 261, 281, 843, 2529, 8149, 24447, 73341, 78961, 236883, 710649, 2289869, 6869607, 20608821]

約数ペア:

[(1, 20608821), (3, 6869607), (9, 2289869), (29, 710649), (87, 236883), (261, 78961), (281, 73341), (843, 24447), (2529, 8149)]