257041617

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{200657}}^1$

素因数の和:200728

約数の個数: 16

約数和(自身を含む): 398105472

約数和(自身を除く): 141063855

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 200657, 601971, 1404599, 4213797, 12240077, 36720231, 85680539, 257041617]

約数ペア:

[(1, 257041617), (3, 85680539), (7, 36720231), (21, 12240077), (61, 4213797), (183, 1404599), (427, 601971), (1281, 200657)]