66296821.000000000

素因数分解:

$2^4\times 5^1\times {\mathrm{1601399}}^1$

素因数の和:1601412

約数の個数: 20

約数和(自身を含む): 297860400

約数和(自身を除く): 169748480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1601399, 3202798, 6405596, 8006995, 12811192, 16013990, 25622384, 32027980, 64055960, 128111920]

約数ペア:

[(1, 128111920), (2, 64055960), (4, 32027980), (5, 25622384), (8, 16013990), (10, 12811192), (16, 8006995), (20, 6405596), (40, 3202798), (80, 1601399)]