81399689

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{1723}}^1$

素因数の和:2144

約数の個数: 16

約数和(自身を含む): 98805888

約数和(自身を除く): 17406199

約数列:

[1, 7, 17, 119, 397, 1723, 2779, 6749, 12061, 29291, 47243, 205037, 684031, 4788217, 11628527, 81399689]

約数ペア:

[(1, 81399689), (7, 11628527), (17, 4788217), (119, 684031), (397, 205037), (1723, 47243), (2779, 29291), (6749, 12061)]