20187078905

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8123573}}^1$

素因数の和:8123656

約数の個数: 16

約数和(自身を含む): 28075071744

約数和(自身を除く): 7887992839

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 8123573, 40617865, 56865011, 284325055, 576773683, 2883868415, 4037415781, 20187078905]

約数ペア:

[(1, 20187078905), (5, 4037415781), (7, 2883868415), (35, 576773683), (71, 284325055), (355, 56865011), (497, 40617865), (2485, 8123573)]