20445910

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4999}}^1$

素因数の和:5415

約数の個数: 16

約数和(自身を含む): 36900000

約数和(自身を除く): 16454090

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 4999, 9998, 24995, 49990, 2044591, 4089182, 10222955, 20445910]

約数ペア:

[(1, 20445910), (2, 10222955), (5, 4089182), (10, 2044591), (409, 49990), (818, 24995), (2045, 9998), (4090, 4999)]