21819707

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{691}}^1$

素因数の和:1058

約数の個数: 16

約数和(自身を含む): 26971392

約数和(自身を除く): 5151685

約数列:

[1, 7, 13, 91, 347, 691, 2429, 4511, 4837, 8983, 31577, 62881, 239777, 1678439, 3117101, 21819707]

約数ペア:

[(1, 21819707), (7, 3117101), (13, 1678439), (91, 239777), (347, 62881), (691, 31577), (2429, 8983), (4511, 4837)]