520044021

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{191969}}^1$

素因数の和:192025

約数の個数: 24

約数和(自身を含む): 878454720

約数和(自身を除く): 358410699

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 191969, 575907, 1343783, 1727721, 4031349, 8254667, 12094047, 24764001, 57782669, 74292003, 173348007, 520044021]

約数ペア:

[(1, 520044021), (3, 173348007), (7, 74292003), (9, 57782669), (21, 24764001), (43, 12094047), (63, 8254667), (129, 4031349), (301, 1727721), (387, 1343783), (903, 575907), (2709, 191969)]