8160800

素因数分解:

$2^5\times 5^2\times {\mathrm{101}}^2$

素因数の和:222

約数の個数: 54

約数和(自身を含む): 20121759

約数和(自身を除く): 11960959

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 101, 160, 200, 202, 400, 404, 505, 800, 808, 1010, 1616, 2020, 2525, 3232, 4040, 5050, 8080, 10100, 10201, 16160, 20200, 20402, 40400, 40804, 51005, 80800, 81608, 102010, 163216, 204020, 255025, 326432, 408040, 510050, 816080, 1020100, 1632160, 2040200, 4080400, 8160800]

約数ペア:

[(1, 8160800), (2, 4080400), (4, 2040200), (5, 1632160), (8, 1020100), (10, 816080), (16, 510050), (20, 408040), (25, 326432), (32, 255025), (40, 204020), (50, 163216), (80, 102010), (100, 81608), (101, 80800), (160, 51005), (200, 40804), (202, 40400), (400, 20402), (404, 20200), (505, 16160), (800, 10201), (808, 10100), (1010, 8080), (1616, 5050), (2020, 4040), (2525, 3232)]