205126220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{788947}}^1$

素因数の和:788969

約数の個数: 24

約数和(自身を含む): 463901424

約数和(自身を除く): 258775204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 788947, 1577894, 3155788, 3944735, 7889470, 10256311, 15778940, 20512622, 41025244, 51281555, 102563110, 205126220]

約数ペア:

[(1, 205126220), (2, 102563110), (4, 51281555), (5, 41025244), (10, 20512622), (13, 15778940), (20, 10256311), (26, 7889470), (52, 3944735), (65, 3155788), (130, 1577894), (260, 788947)]