81591783

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{311}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 138797568

約数和(自身を除く): 57205785

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 311, 403, 651, 933, 961, 1209, 2177, 2821, 2883, 4043, 6531, 6727, 8463, 9641, 12129, 12493, 20181, 28301, 28923, 37479, 67487, 84903, 87451, 125333, 202461, 262353, 298871, 375999, 877331, 896613, 2092097, 2631993, 3885323, 6276291, 11655969, 27197261, 81591783]

約数ペア:

[(1, 81591783), (3, 27197261), (7, 11655969), (13, 6276291), (21, 3885323), (31, 2631993), (39, 2092097), (91, 896613), (93, 877331), (217, 375999), (273, 298871), (311, 262353), (403, 202461), (651, 125333), (933, 87451), (961, 84903), (1209, 67487), (2177, 37479), (2821, 28923), (2883, 28301), (4043, 20181), (6531, 12493), (6727, 12129), (8463, 9641)]