28080400

素因数分解:

$2^4\times 5^2\times {\mathrm{70201}}^1$

素因数の和:70219

約数の個数: 30

約数和(自身を含む): 67464122

約数和(自身を除く): 39383722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 70201, 140402, 280804, 351005, 561608, 702010, 1123216, 1404020, 1755025, 2808040, 3510050, 5616080, 7020100, 14040200, 28080400]

約数ペア:

[(1, 28080400), (2, 14040200), (4, 7020100), (5, 5616080), (8, 3510050), (10, 2808040), (16, 1755025), (20, 1404020), (25, 1123216), (40, 702010), (50, 561608), (80, 351005), (100, 280804), (200, 140402), (400, 70201)]