81109721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1\times {\mathrm{1871}}^1$

素因数の和:2452

約数の個数: 16

約数和(自身を含む): 101357568

約数和(自身を除く): 20247847

約数列:

[1, 7, 11, 77, 563, 1871, 3941, 6193, 13097, 20581, 43351, 144067, 1053373, 7373611, 11587103, 81109721]

約数ペア:

[(1, 81109721), (7, 11587103), (11, 7373611), (77, 1053373), (563, 144067), (1871, 43351), (3941, 20581), (6193, 13097)]