398264321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257443}}^1$

素因数の和:257480

約数の個数: 16

約数和(自身を含む): 519007104

約数和(自身を除く): 120742783

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 257443, 1802101, 3346759, 4376531, 23427313, 30635717, 56894903, 398264321]

約数ペア:

[(1, 398264321), (7, 56894903), (13, 30635717), (17, 23427313), (91, 4376531), (119, 3346759), (221, 1802101), (1547, 257443)]