81435770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{21601}}^1$

素因数の和:21650

約数の個数: 32

約数和(自身を含む): 163311120

約数和(自身を除く): 81875350

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 21601, 43202, 108005, 216010, 280813, 561626, 626429, 1252858, 1404065, 2808130, 3132145, 6264290, 8143577, 16287154, 40717885, 81435770]

約数ペア:

[(1, 81435770), (2, 40717885), (5, 16287154), (10, 8143577), (13, 6264290), (26, 3132145), (29, 2808130), (58, 1404065), (65, 1252858), (130, 626429), (145, 561626), (290, 280813), (377, 216010), (754, 108005), (1885, 43202), (3770, 21601)]