217703031

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{113921}}^1$

素因数の和:113951

約数の個数: 24

約数和(自身を含む): 363639024

約数和(自身を除く): 145935993

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 113921, 341763, 797447, 1480973, 2392341, 4442919, 5582129, 10366811, 16746387, 31100433, 72567677, 217703031]

約数ペア:

[(1, 217703031), (3, 72567677), (7, 31100433), (13, 16746387), (21, 10366811), (39, 5582129), (49, 4442919), (91, 2392341), (147, 1480973), (273, 797447), (637, 341763), (1911, 113921)]