805392020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{390967}}^1$

素因数の和:391079

約数の個数: 24

約数和(自身を含む): 1707748224

約数和(自身を除く): 902356204

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 390967, 781934, 1563868, 1954835, 3909670, 7819340, 40269601, 80539202, 161078404, 201348005, 402696010, 805392020]

約数ペア:

[(1, 805392020), (2, 402696010), (4, 201348005), (5, 161078404), (10, 80539202), (20, 40269601), (103, 7819340), (206, 3909670), (412, 1954835), (515, 1563868), (1030, 781934), (2060, 390967)]