20771009

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2647}}^1$

素因数の和:2732

約数の個数: 16

約数和(自身を含む): 25420800

約数和(自身を除く): 4649791

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2647, 7847, 18529, 50293, 156173, 352051, 1093211, 2967287, 20771009]

約数ペア:

[(1, 20771009), (7, 2967287), (19, 1093211), (59, 352051), (133, 156173), (413, 50293), (1121, 18529), (2647, 7847)]