810400

素因数分解:

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

素因数の和:1033

約数の個数: 36

約数和(自身を含む): 1980342

約数和(自身を除く): 1169942

約数列:

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

約数ペア:

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