81640179

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{521}}^1\times {\mathrm{757}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 123450912

約数和(自身を除く): 41810733

約数列:

[1, 3, 9, 23, 69, 207, 521, 757, 1563, 2271, 4689, 6813, 11983, 17411, 35949, 52233, 107847, 156699, 394397, 1183191, 3549573, 9071131, 27213393, 81640179]

約数ペア:

[(1, 81640179), (3, 27213393), (9, 9071131), (23, 3549573), (69, 1183191), (207, 394397), (521, 156699), (757, 107847), (1563, 52233), (2271, 35949), (4689, 17411), (6813, 11983)]