645693055443

素因数分解:

$3^4\times {\mathrm{409}}^1\times {\mathrm{19490267}}^1$

素因数の和:19490688

約数の個数: 20

約数和(自身を含む): 966912195480

約数和(自身を除く): 321219140037

約数列:

[1, 3, 9, 27, 81, 409, 1227, 3681, 11043, 33129, 19490267, 58470801, 175412403, 526237209, 1578711627, 7971519203, 23914557609, 71743672827, 215231018481, 645693055443]

約数ペア:

[(1, 645693055443), (3, 215231018481), (9, 71743672827), (27, 23914557609), (81, 7971519203), (409, 1578711627), (1227, 526237209), (3681, 175412403), (11043, 58470801), (33129, 19490267)]