81228500

素因数分解:

$2^2\times 5^3\times {\mathrm{162457}}^1$

素因数の和:162476

約数の個数: 24

約数和(自身を含む): 177404136

約数和(自身を除く): 96175636

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 162457, 324914, 649828, 812285, 1624570, 3249140, 4061425, 8122850, 16245700, 20307125, 40614250, 81228500]

約数ペア:

[(1, 81228500), (2, 40614250), (4, 20307125), (5, 16245700), (10, 8122850), (20, 4061425), (25, 3249140), (50, 1624570), (100, 812285), (125, 649828), (250, 324914), (500, 162457)]