208664991

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{32609}}^1$

素因数の和:32700

約数の個数: 20

約数和(自身を含む): 315664800

約数和(自身を除く): 106999809

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 6399, 32609, 97827, 293481, 880443, 2576111, 2641329, 7728333, 23184999, 69554997, 208664991]

約数ペア:

[(1, 208664991), (3, 69554997), (9, 23184999), (27, 7728333), (79, 2641329), (81, 2576111), (237, 880443), (711, 293481), (2133, 97827), (6399, 32609)]