20809197

素因数分解:

$3^3\times {\mathrm{479}}^1\times {\mathrm{1609}}^1$

素因数の和:2097

約数の個数: 16

約数和(自身を含む): 30912000

約数和(自身を除く): 10102803

約数列:

[1, 3, 9, 27, 479, 1437, 1609, 4311, 4827, 12933, 14481, 43443, 770711, 2312133, 6936399, 20809197]

約数ペア:

[(1, 20809197), (3, 6936399), (9, 2312133), (27, 770711), (479, 43443), (1437, 14481), (1609, 12933), (4311, 4827)]