9090800

素因数分解:

$2^4\times 5^2\times {\mathrm{22727}}^1$

素因数の和:22745

約数の個数: 30

約数和(自身を含む): 21841608

約数和(自身を除く): 12750808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 22727, 45454, 90908, 113635, 181816, 227270, 363632, 454540, 568175, 909080, 1136350, 1818160, 2272700, 4545400, 9090800]

約数ペア:

[(1, 9090800), (2, 4545400), (4, 2272700), (5, 1818160), (8, 1136350), (10, 909080), (16, 568175), (20, 454540), (25, 363632), (40, 227270), (50, 181816), (80, 113635), (100, 90908), (200, 45454), (400, 22727)]