1620800

素因数分解:

$2^6\times 5^2\times {\mathrm{1013}}^1$

素因数の和:1035

約数の個数: 42

約数和(自身を含む): 3992118

約数和(自身を除く): 2371318

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1013, 1600, 2026, 4052, 5065, 8104, 10130, 16208, 20260, 25325, 32416, 40520, 50650, 64832, 81040, 101300, 162080, 202600, 324160, 405200, 810400, 1620800]

約数ペア:

[(1, 1620800), (2, 810400), (4, 405200), (5, 324160), (8, 202600), (10, 162080), (16, 101300), (20, 81040), (25, 64832), (32, 50650), (40, 40520), (50, 32416), (64, 25325), (80, 20260), (100, 16208), (160, 10130), (200, 8104), (320, 5065), (400, 4052), (800, 2026), (1013, 1600)]