221331

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 339840

約数和(自身を除く): 118509

約数列:

[1, 3, 11, 19, 33, 57, 209, 353, 627, 1059, 3883, 6707, 11649, 20121, 73777, 221331]

約数ペア:

[(1, 221331), (3, 73777), (11, 20121), (19, 11649), (33, 6707), (57, 3883), (209, 1059), (353, 627)]