81657404

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{1601}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 146948256

約数和(自身を除く): 65290852

約数列:

[1, 2, 4, 41, 82, 164, 311, 622, 1244, 1601, 3202, 6404, 12751, 25502, 51004, 65641, 131282, 262564, 497911, 995822, 1991644, 20414351, 40828702, 81657404]

約数ペア:

[(1, 81657404), (2, 40828702), (4, 20414351), (41, 1991644), (82, 995822), (164, 497911), (311, 262564), (622, 131282), (1244, 65641), (1601, 51004), (3202, 25502), (6404, 12751)]