18808281

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2609}}^1$

素因数の和:2710

約数の個数: 20

約数和(自身を含む): 28422900

約数和(自身を除く): 9614619

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2609, 7209, 7827, 23481, 70443, 211329, 232201, 696603, 2089809, 6269427, 18808281]

約数ペア:

[(1, 18808281), (3, 6269427), (9, 2089809), (27, 696603), (81, 232201), (89, 211329), (267, 70443), (801, 23481), (2403, 7827), (2609, 7209)]