20077810

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4909}}^1$

素因数の和:5325

約数の個数: 16

約数和(自身を含む): 36235800

約数和(自身を除く): 16157990

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 4909, 9818, 24545, 49090, 2007781, 4015562, 10038905, 20077810]

約数ペア:

[(1, 20077810), (2, 10038905), (5, 4015562), (10, 2007781), (409, 49090), (818, 24545), (2045, 9818), (4090, 4909)]