19956478

素因数分解:

$2^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:731

約数の個数: 16

約数和(自身を含む): 30410640

約数和(自身を除く): 10454162

約数列:

[1, 2, 113, 226, 227, 389, 454, 778, 25651, 43957, 51302, 87914, 88303, 176606, 9978239, 19956478]

約数ペア:

[(1, 19956478), (2, 9978239), (113, 176606), (226, 88303), (227, 87914), (389, 51302), (454, 43957), (778, 25651)]