12811311

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 19837440

約数和(自身を除く): 7026129

約数列:

[1, 3, 9, 27, 41, 71, 123, 163, 213, 369, 489, 639, 1107, 1467, 1917, 2911, 4401, 6683, 8733, 11573, 20049, 26199, 34719, 60147, 78597, 104157, 180441, 312471, 474493, 1423479, 4270437, 12811311]

約数ペア:

[(1, 12811311), (3, 4270437), (9, 1423479), (27, 474493), (41, 312471), (71, 180441), (123, 104157), (163, 78597), (213, 60147), (369, 34719), (489, 26199), (639, 20049), (1107, 11573), (1467, 8733), (1917, 6683), (2911, 4401)]