20563587

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:872

約数の個数: 36

約数和(自身を含む): 34109712

約数和(自身を除く): 13546125

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 121, 207, 253, 363, 759, 821, 1089, 2277, 2463, 2783, 7389, 8349, 9031, 18883, 25047, 27093, 56649, 81279, 99341, 169947, 207713, 298023, 623139, 894069, 1869417, 2284843, 6854529, 20563587]

約数ペア:

[(1, 20563587), (3, 6854529), (9, 2284843), (11, 1869417), (23, 894069), (33, 623139), (69, 298023), (99, 207713), (121, 169947), (207, 99341), (253, 81279), (363, 56649), (759, 27093), (821, 25047), (1089, 18883), (2277, 9031), (2463, 8349), (2783, 7389)]