209457

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{37}}^2$

素因数の和:97

約数の個数: 18

約数和(自身を含む): 329238

約数和(自身を除く): 119781

約数列:

[1, 3, 9, 17, 37, 51, 111, 153, 333, 629, 1369, 1887, 4107, 5661, 12321, 23273, 69819, 209457]

約数ペア:

[(1, 209457), (3, 69819), (9, 23273), (17, 12321), (37, 5661), (51, 4107), (111, 1887), (153, 1369), (333, 629)]