21657285

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37021}}^1$

素因数の和:37045

約数の個数: 24

約数和(自身を含む): 40428024

約数和(自身を除く): 18770739

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 37021, 111063, 185105, 333189, 481273, 555315, 1443819, 1665945, 2406365, 4331457, 7219095, 21657285]

約数ペア:

[(1, 21657285), (3, 7219095), (5, 4331457), (9, 2406365), (13, 1665945), (15, 1443819), (39, 555315), (45, 481273), (65, 333189), (117, 185105), (195, 111063), (585, 37021)]