68481231

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1831}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 113261568

約数和(自身を除く): 44780337

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 959, 1781, 1831, 2877, 5343, 5493, 12467, 12817, 23803, 37401, 38451, 71409, 166621, 250847, 499863, 752541, 1755929, 3261011, 5267787, 9783033, 22827077, 68481231]

約数ペア:

[(1, 68481231), (3, 22827077), (7, 9783033), (13, 5267787), (21, 3261011), (39, 1755929), (91, 752541), (137, 499863), (273, 250847), (411, 166621), (959, 71409), (1781, 38451), (1831, 37401), (2877, 23803), (5343, 12817), (5493, 12467)]