489796640

素因数分解:

$2^5\times 5^1\times {\mathrm{3061229}}^1$

素因数の和:3061244

約数の個数: 24

約数和(自身を含む): 1157144940

約数和(自身を除く): 667348300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 3061229, 6122458, 12244916, 15306145, 24489832, 30612290, 48979664, 61224580, 97959328, 122449160, 244898320, 489796640]

約数ペア:

[(1, 489796640), (2, 244898320), (4, 122449160), (5, 97959328), (8, 61224580), (10, 48979664), (16, 30612290), (20, 24489832), (32, 15306145), (40, 12244916), (80, 6122458), (160, 3061229)]