28978209

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{82559}}^1$

素因数の和:82581

約数の個数: 16

約数和(自身を含む): 46233600

約数和(自身を除く): 17255391

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 82559, 247677, 743031, 1073267, 2229093, 3219801, 9659403, 28978209]

約数ペア:

[(1, 28978209), (3, 9659403), (9, 3219801), (13, 2229093), (27, 1073267), (39, 743031), (117, 247677), (351, 82559)]