21956589

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1663}}^1$

素因数の和:1838

約数の個数: 20

約数和(自身を含む): 33020416

約数和(自身を除く): 11063827

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 1663, 4401, 4989, 13203, 14967, 44901, 134703, 271069, 813207, 2439621, 7318863, 21956589]

約数ペア:

[(1, 21956589), (3, 7318863), (9, 2439621), (27, 813207), (81, 271069), (163, 134703), (489, 44901), (1467, 14967), (1663, 13203), (4401, 4989)]