21325017

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9859}}^1$

素因数の和:9972

約数の個数: 16

約数和(自身を含む): 32814080

約数和(自身を除く): 11489063

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9859, 29577, 69013, 207039, 1015477, 3046431, 7108339, 21325017]

約数ペア:

[(1, 21325017), (3, 7108339), (7, 3046431), (21, 1015477), (103, 207039), (309, 69013), (721, 29577), (2163, 9859)]