81573921

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{263}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 139531392

約数和(自身を除く): 57957471

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 241, 263, 429, 723, 789, 1287, 2169, 2367, 2651, 2893, 3133, 3419, 7953, 8679, 9399, 10257, 23859, 26037, 28197, 30771, 34463, 37609, 63383, 103389, 112827, 190149, 310167, 338481, 570447, 697213, 823979, 2091639, 2471937, 6274917, 7415811, 9063769, 27191307, 81573921]

約数ペア:

[(1, 81573921), (3, 27191307), (9, 9063769), (11, 7415811), (13, 6274917), (33, 2471937), (39, 2091639), (99, 823979), (117, 697213), (143, 570447), (241, 338481), (263, 310167), (429, 190149), (723, 112827), (789, 103389), (1287, 63383), (2169, 37609), (2367, 34463), (2651, 30771), (2893, 28197), (3133, 26037), (3419, 23859), (7953, 10257), (8679, 9399)]