20909530

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90911}}^1$

素因数の和:90941

約数の個数: 16

約数和(自身を含む): 39273984

約数和(自身を除く): 18364454

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90911, 181822, 454555, 909110, 2090953, 4181906, 10454765, 20909530]

約数ペア:

[(1, 20909530), (2, 10454765), (5, 4181906), (10, 2090953), (23, 909110), (46, 454555), (115, 181822), (230, 90911)]