20855169

素因数分解:

$3^2\times {\mathrm{47}}^2\times {\mathrm{1049}}^1$

素因数の和:1149

約数の個数: 18

約数和(自身を含む): 30808050

約数和(自身を除く): 9952881

約数列:

[1, 3, 9, 47, 141, 423, 1049, 2209, 3147, 6627, 9441, 19881, 49303, 147909, 443727, 2317241, 6951723, 20855169]

約数ペア:

[(1, 20855169), (3, 6951723), (9, 2317241), (47, 443727), (141, 147909), (423, 49303), (1049, 19881), (2209, 9441), (3147, 6627)]