18231561

素因数分解:

$3^6\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:388

約数の個数: 28

約数和(自身を含む): 27740340

約数和(自身を除く): 9508779

約数列:

[1, 3, 9, 27, 81, 89, 243, 267, 281, 729, 801, 843, 2403, 2529, 7209, 7587, 21627, 22761, 25009, 64881, 68283, 75027, 204849, 225081, 675243, 2025729, 6077187, 18231561]

約数ペア:

[(1, 18231561), (3, 6077187), (9, 2025729), (27, 675243), (81, 225081), (89, 204849), (243, 75027), (267, 68283), (281, 64881), (729, 25009), (801, 22761), (843, 21627), (2403, 7587), (2529, 7209)]