8256400

素因数分解:

$2^4\times 5^2\times {\mathrm{20641}}^1$

素因数の和:20659

約数の個数: 30

約数和(自身を含む): 19836962

約数和(自身を除く): 11580562

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20641, 41282, 82564, 103205, 165128, 206410, 330256, 412820, 516025, 825640, 1032050, 1651280, 2064100, 4128200, 8256400]

約数ペア:

[(1, 8256400), (2, 4128200), (4, 2064100), (5, 1651280), (8, 1032050), (10, 825640), (16, 516025), (20, 412820), (25, 330256), (40, 206410), (50, 165128), (80, 103205), (100, 82564), (200, 41282), (400, 20641)]