128250800

素因数分解:

$2^4\times 5^2\times {\mathrm{320627}}^1$

素因数の和:320645

約数の個数: 30

約数和(自身を含む): 308123508

約数和(自身を除く): 179872708

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 320627, 641254, 1282508, 1603135, 2565016, 3206270, 5130032, 6412540, 8015675, 12825080, 16031350, 25650160, 32062700, 64125400, 128250800]

約数ペア:

[(1, 128250800), (2, 64125400), (4, 32062700), (5, 25650160), (8, 16031350), (10, 12825080), (16, 8015675), (20, 6412540), (25, 5130032), (40, 3206270), (50, 2565016), (80, 1603135), (100, 1282508), (200, 641254), (400, 320627)]