12405879

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{2687}}^1$

素因数の和:2721

約数の個数: 24

約数和(自身を含む): 19568640

約数和(自身を除く): 7162761

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 2687, 4617, 8061, 24183, 51053, 72549, 153159, 217647, 459477, 652941, 1378431, 4135293, 12405879]

約数ペア:

[(1, 12405879), (3, 4135293), (9, 1378431), (19, 652941), (27, 459477), (57, 217647), (81, 153159), (171, 72549), (243, 51053), (513, 24183), (1539, 8061), (2687, 4617)]