81147740

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{5581}}^1$

素因数の和:6317

約数の個数: 24

約数和(自身を含む): 170675232

約数和(自身を除く): 89527492

約数列:

[1, 2, 4, 5, 10, 20, 727, 1454, 2908, 3635, 5581, 7270, 11162, 14540, 22324, 27905, 55810, 111620, 4057387, 8114774, 16229548, 20286935, 40573870, 81147740]

約数ペア:

[(1, 81147740), (2, 40573870), (4, 20286935), (5, 16229548), (10, 8114774), (20, 4057387), (727, 111620), (1454, 55810), (2908, 27905), (3635, 22324), (5581, 14540), (7270, 11162)]