20906800

素因数分解:

$2^4\times 5^2\times {\mathrm{52267}}^1$

素因数の和:52285

約数の個数: 30

約数和(自身を含む): 50229548

約数和(自身を除く): 29322748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52267, 104534, 209068, 261335, 418136, 522670, 836272, 1045340, 1306675, 2090680, 2613350, 4181360, 5226700, 10453400, 20906800]

約数ペア:

[(1, 20906800), (2, 10453400), (4, 5226700), (5, 4181360), (8, 2613350), (10, 2090680), (16, 1306675), (20, 1045340), (25, 836272), (40, 522670), (50, 418136), (80, 261335), (100, 209068), (200, 104534), (400, 52267)]