20521863

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4663}}^1$

素因数の和:4835

約数の個数: 16

約数和(自身を含む): 30595840

約数和(自身を除く): 10073977

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4663, 13989, 41967, 125901, 760069, 2280207, 6840621, 20521863]

約数ペア:

[(1, 20521863), (3, 6840621), (9, 2280207), (27, 760069), (163, 125901), (489, 41967), (1467, 13989), (4401, 4663)]