20660391

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{6359}}^1$

素因数の和:6403

約数の個数: 18

約数和(自身を含む): 31501080

約数和(自身を除く): 10840689

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 6359, 19077, 57231, 120821, 362463, 1087389, 2295599, 6886797, 20660391]

約数ペア:

[(1, 20660391), (3, 6886797), (9, 2295599), (19, 1087389), (57, 362463), (171, 120821), (361, 57231), (1083, 19077), (3249, 6359)]