18128929

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 23595264

約数和(自身を除く): 5466335

約数列:

[1, 7, 13, 41, 43, 91, 113, 287, 301, 533, 559, 791, 1469, 1763, 3731, 3913, 4633, 4859, 10283, 12341, 22919, 32431, 34013, 60229, 63167, 160433, 199219, 421603, 442169, 1394533, 2589847, 18128929]

約数ペア:

[(1, 18128929), (7, 2589847), (13, 1394533), (41, 442169), (43, 421603), (91, 199219), (113, 160433), (287, 63167), (301, 60229), (533, 34013), (559, 32431), (791, 22919), (1469, 12341), (1763, 10283), (3731, 4859), (3913, 4633)]