19729647

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7283}}^1$

素因数の和:7339

約数の個数: 24

約数和(自身を含む): 33331584

約数和(自身を除く): 13601937

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7283, 21849, 50981, 65547, 152943, 313169, 458829, 939507, 2192183, 2818521, 6576549, 19729647]

約数ペア:

[(1, 19729647), (3, 6576549), (7, 2818521), (9, 2192183), (21, 939507), (43, 458829), (63, 313169), (129, 152943), (301, 65547), (387, 50981), (903, 21849), (2709, 7283)]