18181993

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 20442240

約数和(自身を除く): 2260247

約数列:

[1, 17, 19, 181, 311, 323, 3077, 3439, 5287, 5909, 56291, 58463, 100453, 956947, 1069529, 18181993]

約数ペア:

[(1, 18181993), (17, 1069529), (19, 956947), (181, 100453), (311, 58463), (323, 56291), (3077, 5909), (3439, 5287)]