81991679

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{3217}}^1$

素因数の和:3566

約数の個数: 16

約数和(自身を含む): 102564096

約数和(自身を除く): 20572417

約数列:

[1, 7, 11, 77, 331, 2317, 3217, 3641, 22519, 25487, 35387, 247709, 1064827, 7453789, 11713097, 81991679]

約数ペア:

[(1, 81991679), (7, 11713097), (11, 7453789), (77, 1064827), (331, 247709), (2317, 35387), (3217, 25487), (3641, 22519)]