208221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:316

約数の個数: 16

約数和(自身を含む): 315840

約数和(自身を除く): 107619

約数列:

[1, 3, 13, 19, 39, 57, 247, 281, 741, 843, 3653, 5339, 10959, 16017, 69407, 208221]

約数ペア:

[(1, 208221), (3, 69407), (13, 16017), (19, 10959), (39, 5339), (57, 3653), (247, 843), (281, 741)]