128880004

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{266281}}^1$

素因数の和:266307

約数の個数: 18

約数和(自身を含む): 247908542

約数和(自身を除く): 119028538

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 266281, 532562, 1065124, 2929091, 5858182, 11716364, 32220001, 64440002, 128880004]

約数ペア:

[(1, 128880004), (2, 64440002), (4, 32220001), (11, 11716364), (22, 5858182), (44, 2929091), (121, 1065124), (242, 532562), (484, 266281)]