20385655

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1789}}^1$

素因数の和:1890

約数の個数: 16

約数和(自身を含む): 25518240

約数和(自身を除く): 5132585

約数列:

[1, 5, 43, 53, 215, 265, 1789, 2279, 8945, 11395, 76927, 94817, 384635, 474085, 4077131, 20385655]

約数ペア:

[(1, 20385655), (5, 4077131), (43, 474085), (53, 384635), (215, 94817), (265, 76927), (1789, 11395), (2279, 8945)]