158720023

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{18911}}^1$

素因数の和:19038

約数の個数: 16

約数和(自身を含む): 199710720

約数和(自身を除く): 40990697

約数列:

[1, 7, 11, 77, 109, 763, 1199, 8393, 18911, 132377, 208021, 1456147, 2061299, 14429093, 22674289, 158720023]

約数ペア:

[(1, 158720023), (7, 22674289), (11, 14429093), (77, 2061299), (109, 1456147), (763, 208021), (1199, 132377), (8393, 18911)]