128503438

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{399079}}^1$

素因数の和:399111

約数の個数: 16

約数和(自身を含む): 229870080

約数和(自身を除く): 101366642

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 399079, 798158, 2793553, 5587106, 9178817, 18357634, 64251719, 128503438]

約数ペア:

[(1, 128503438), (2, 64251719), (7, 18357634), (14, 9178817), (23, 5587106), (46, 2793553), (161, 798158), (322, 399079)]