21257230

素因数分解:

$2^1\times 5^1\times {\mathrm{743}}^1\times {\mathrm{2861}}^1$

素因数の和:3611

約数の個数: 16

約数和(自身を含む): 38327904

約数和(自身を除く): 17070674

約数列:

[1, 2, 5, 10, 743, 1486, 2861, 3715, 5722, 7430, 14305, 28610, 2125723, 4251446, 10628615, 21257230]

約数ペア:

[(1, 21257230), (2, 10628615), (5, 4251446), (10, 2125723), (743, 28610), (1486, 14305), (2861, 7430), (3715, 5722)]