20405468168

素因数分解:

$2^3\times {\mathrm{8069}}^1\times {\mathrm{316109}}^1$

素因数の和:324184

約数の個数: 16

約数和(自身を含む): 38265115500

約数和(自身を除く): 17859647332

約数列:

[1, 2, 4, 8, 8069, 16138, 32276, 64552, 316109, 632218, 1264436, 2528872, 2550683521, 5101367042, 10202734084, 20405468168]

約数ペア:

[(1, 20405468168), (2, 10202734084), (4, 5101367042), (8, 2550683521), (8069, 2528872), (16138, 1264436), (32276, 632218), (64552, 316109)]