20123999987

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17010989}}^1$

素因数の和:17011022

約数の個数: 12

約数和(自身を含む): 24904089360

約数和(自身を除く): 4780089373

約数列:

[1, 7, 13, 91, 169, 1183, 17010989, 119076923, 221142857, 1547999999, 2874857141, 20123999987]

約数ペア:

[(1, 20123999987), (7, 2874857141), (13, 1547999999), (91, 221142857), (169, 119076923), (1183, 17010989)]