489609020

素因数分解:

$2^2\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{19919}}^1$

素因数の和:21157

約数の個数: 24

約数和(自身を含む): 1029067200

約数和(自身を除く): 539458180

約数列:

[1, 2, 4, 5, 10, 20, 1229, 2458, 4916, 6145, 12290, 19919, 24580, 39838, 79676, 99595, 199190, 398380, 24480451, 48960902, 97921804, 122402255, 244804510, 489609020]

約数ペア:

[(1, 489609020), (2, 244804510), (4, 122402255), (5, 97921804), (10, 48960902), (20, 24480451), (1229, 398380), (2458, 199190), (4916, 99595), (6145, 79676), (12290, 39838), (19919, 24580)]