198009

素因数分解:

$3^2\times 7^2\times {\mathrm{449}}^1$

素因数の和:469

約数の個数: 18

約数和(自身を含む): 333450

約数和(自身を除く): 135441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 449, 1347, 3143, 4041, 9429, 22001, 28287, 66003, 198009]

約数ペア:

[(1, 198009), (3, 66003), (7, 28287), (9, 22001), (21, 9429), (49, 4041), (63, 3143), (147, 1347), (441, 449)]