20901069

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3221}}^1$

素因数の和:3337

約数の個数: 24

約数和(自身を含む): 34849152

約数和(自身を除く): 13948083

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 3221, 6489, 9663, 22547, 28989, 67641, 202923, 331763, 995289, 2322341, 2985867, 6967023, 20901069]

約数ペア:

[(1, 20901069), (3, 6967023), (7, 2985867), (9, 2322341), (21, 995289), (63, 331763), (103, 202923), (309, 67641), (721, 28989), (927, 22547), (2163, 9663), (3221, 6489)]