20912577

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23159}}^1$

素因数の和:23212

約数の個数: 16

約数和(自身を含む): 32609280

約数和(自身を除く): 11696703

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23159, 69477, 162113, 486339, 995837, 2987511, 6970859, 20912577]

約数ペア:

[(1, 20912577), (3, 6970859), (7, 2987511), (21, 995837), (43, 486339), (129, 162113), (301, 69477), (903, 23159)]