81720863

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1\times {\mathrm{1873}}^1$

素因数の和:2174

約数の個数: 16

約数和(自身を含む): 97867776

約数和(自身を除く): 16146913

約数列:

[1, 7, 23, 161, 271, 1873, 1897, 6233, 13111, 43079, 43631, 301553, 507583, 3553081, 11674409, 81720863]

約数ペア:

[(1, 81720863), (7, 11674409), (23, 3553081), (161, 507583), (271, 301553), (1873, 43631), (1897, 43079), (6233, 13111)]