21061850

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4733}}^1$

素因数の和:4834

約数の個数: 24

約数和(自身を含む): 39623580

約数和(自身を除く): 18561730

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4733, 9466, 23665, 47330, 118325, 236650, 421237, 842474, 2106185, 4212370, 10530925, 21061850]

約数ペア:

[(1, 21061850), (2, 10530925), (5, 4212370), (10, 2106185), (25, 842474), (50, 421237), (89, 236650), (178, 118325), (445, 47330), (890, 23665), (2225, 9466), (4450, 4733)]