398891521

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{13121}}^1$

素因数の和:13272

約数の個数: 16

約数和(自身を含む): 471132288

約数和(自身を除く): 72240767

約数列:

[1, 7, 43, 101, 301, 707, 4343, 13121, 30401, 91847, 564203, 1325221, 3949421, 9276547, 56984503, 398891521]

約数ペア:

[(1, 398891521), (7, 56984503), (43, 9276547), (101, 3949421), (301, 1325221), (707, 564203), (4343, 91847), (13121, 30401)]