281639380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1280179}}^1$

素因数の和:1280199

約数の個数: 24

約数和(自身を含む): 645210720

約数和(自身を除く): 363571340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1280179, 2560358, 5120716, 6400895, 12801790, 14081969, 25603580, 28163938, 56327876, 70409845, 140819690, 281639380]

約数ペア:

[(1, 281639380), (2, 140819690), (4, 70409845), (5, 56327876), (10, 28163938), (11, 25603580), (20, 14081969), (22, 12801790), (44, 6400895), (55, 5120716), (110, 2560358), (220, 1280179)]