18173889

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2521}}^1$

素因数の和:2622

約数の個数: 20

約数和(自身を含む): 27464580

約数和(自身を除く): 9290691

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2521, 7209, 7563, 22689, 68067, 204201, 224369, 673107, 2019321, 6057963, 18173889]

約数ペア:

[(1, 18173889), (3, 6057963), (9, 2019321), (27, 673107), (81, 224369), (89, 204201), (267, 68067), (801, 22689), (2403, 7563), (2521, 7209)]