81318255

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 132879360

約数和(自身を除く): 51561105

約数列:

[1, 3, 5, 15, 79, 163, 237, 395, 421, 489, 815, 1185, 1263, 2105, 2445, 6315, 12877, 33259, 38631, 64385, 68623, 99777, 166295, 193155, 205869, 343115, 498885, 1029345, 5421217, 16263651, 27106085, 81318255]

約数ペア:

[(1, 81318255), (3, 27106085), (5, 16263651), (15, 5421217), (79, 1029345), (163, 498885), (237, 343115), (395, 205869), (421, 193155), (489, 166295), (815, 99777), (1185, 68623), (1263, 64385), (2105, 38631), (2445, 33259), (6315, 12877)]