20813452

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43003}}^1$

素因数の和:43029

約数の個数: 18

約数和(自身を含む): 40036724

約数和(自身を除く): 19223272

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43003, 86006, 172012, 473033, 946066, 1892132, 5203363, 10406726, 20813452]

約数ペア:

[(1, 20813452), (2, 10406726), (4, 5203363), (11, 1892132), (22, 946066), (44, 473033), (121, 172012), (242, 86006), (484, 43003)]