398391

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:382

約数の個数: 16

約数和(自身を含む): 619008

約数和(自身を除く): 220617

約数列:

[1, 3, 7, 21, 61, 183, 311, 427, 933, 1281, 2177, 6531, 18971, 56913, 132797, 398391]

約数ペア:

[(1, 398391), (3, 132797), (7, 56913), (21, 18971), (61, 6531), (183, 2177), (311, 1281), (427, 933)]