21130347

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9769}}^1$

素因数の和:9882

約数の個数: 16

約数和(自身を含む): 32514560

約数和(自身を除く): 11384213

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9769, 29307, 68383, 205149, 1006207, 3018621, 7043449, 21130347]

約数ペア:

[(1, 21130347), (3, 7043449), (7, 3018621), (21, 1006207), (103, 205149), (309, 68383), (721, 29307), (2163, 9769)]