520020879

素因数分解:

$3^1\times 7^2\times {\mathrm{1637}}^1\times {\mathrm{2161}}^1$

素因数の和:3815

約数の個数: 24

約数和(自身を含む): 807429168

約数和(自身を除く): 287408289

約数列:

[1, 3, 7, 21, 49, 147, 1637, 2161, 4911, 6483, 11459, 15127, 34377, 45381, 80213, 105889, 240639, 317667, 3537557, 10612671, 24762899, 74288697, 173340293, 520020879]

約数ペア:

[(1, 520020879), (3, 173340293), (7, 74288697), (21, 24762899), (49, 10612671), (147, 3537557), (1637, 317667), (2161, 240639), (4911, 105889), (6483, 80213), (11459, 45381), (15127, 34377)]