2565999

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:492

約数の個数: 20

約数和(自身を含む): 3891360

約数和(自身を除く): 1325361

約数列:

[1, 3, 9, 27, 79, 81, 237, 401, 711, 1203, 2133, 3609, 6399, 10827, 31679, 32481, 95037, 285111, 855333, 2565999]

約数ペア:

[(1, 2565999), (3, 855333), (9, 285111), (27, 95037), (79, 32481), (81, 31679), (237, 10827), (401, 6399), (711, 3609), (1203, 2133)]