18620343

素因数分解:

$3^2\times 7^2\times {\mathrm{42223}}^1$

素因数の和:42243

約数の個数: 18

約数和(自身を含む): 31287984

約数和(自身を除く): 12667641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42223, 126669, 295561, 380007, 886683, 2068927, 2660049, 6206781, 18620343]

約数ペア:

[(1, 18620343), (3, 6206781), (7, 2660049), (9, 2068927), (21, 886683), (49, 380007), (63, 295561), (147, 126669), (441, 42223)]