20404539

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{691}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 31414032

約数和(自身を除く): 11009493

約数列:

[1, 3, 9, 17, 51, 153, 193, 579, 691, 1737, 2073, 3281, 6219, 9843, 11747, 29529, 35241, 105723, 133363, 400089, 1200267, 2267171, 6801513, 20404539]

約数ペア:

[(1, 20404539), (3, 6801513), (9, 2267171), (17, 1200267), (51, 400089), (153, 133363), (193, 105723), (579, 35241), (691, 29529), (1737, 11747), (2073, 9843), (3281, 6219)]