20486810

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5009}}^1$

素因数の和:5425

約数の個数: 16

約数和(自身を含む): 36973800

約数和(自身を除く): 16486990

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5009, 10018, 25045, 50090, 2048681, 4097362, 10243405, 20486810]

約数ペア:

[(1, 20486810), (2, 10243405), (5, 4097362), (10, 2048681), (409, 50090), (818, 25045), (2045, 10018), (4090, 5009)]