20180800

素因数分解:

$2^6\times 5^2\times {\mathrm{12613}}^1$

素因数の和:12635

約数の個数: 42

約数和(自身を含む): 49661318

約数和(自身を除く): 29480518

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12613, 25226, 50452, 63065, 100904, 126130, 201808, 252260, 315325, 403616, 504520, 630650, 807232, 1009040, 1261300, 2018080, 2522600, 4036160, 5045200, 10090400, 20180800]

約数ペア:

[(1, 20180800), (2, 10090400), (4, 5045200), (5, 4036160), (8, 2522600), (10, 2018080), (16, 1261300), (20, 1009040), (25, 807232), (32, 630650), (40, 504520), (50, 403616), (64, 315325), (80, 252260), (100, 201808), (160, 126130), (200, 100904), (320, 63065), (400, 50452), (800, 25226), (1600, 12613)]