209931418

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{128477}}^1$

素因数の和:128541

約数の個数: 16

約数和(自身を含む): 339181920

約数和(自身を除く): 129250502

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 128477, 256954, 2441063, 4882126, 5524511, 11049022, 104965709, 209931418]

約数ペア:

[(1, 209931418), (2, 104965709), (19, 11049022), (38, 5524511), (43, 4882126), (86, 2441063), (817, 256954), (1634, 128477)]