81731338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1777}}^1$

素因数の和:1882

約数の個数: 32

約数和(自身を含む): 138897360

約数和(自身を除く): 57166022

約数列:

[1, 2, 13, 26, 29, 58, 61, 122, 377, 754, 793, 1586, 1769, 1777, 3538, 3554, 22997, 23101, 45994, 46202, 51533, 103066, 108397, 216794, 669929, 1339858, 1409161, 2818322, 3143513, 6287026, 40865669, 81731338]

約数ペア:

[(1, 81731338), (2, 40865669), (13, 6287026), (26, 3143513), (29, 2818322), (58, 1409161), (61, 1339858), (122, 669929), (377, 216794), (754, 108397), (793, 103066), (1586, 51533), (1769, 46202), (1777, 45994), (3538, 23101), (3554, 22997)]