19215693

素因数分解:

$3^2\times 7^2\times {\mathrm{43573}}^1$

素因数の和:43593

約数の個数: 18

約数和(自身を含む): 32288334

約数和(自身を除く): 13072641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43573, 130719, 305011, 392157, 915033, 2135077, 2745099, 6405231, 19215693]

約数ペア:

[(1, 19215693), (3, 6405231), (7, 2745099), (9, 2135077), (21, 915033), (49, 392157), (63, 305011), (147, 130719), (441, 43573)]