257715666416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1239017627}}^1$

素因数の和:1239017648

約数の個数: 20

約数和(自身を含む): 537733650552

約数和(自身を除く): 280017984136

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1239017627, 2478035254, 4956070508, 9912141016, 16107229151, 19824282032, 32214458302, 64428916604, 128857833208, 257715666416]

約数ペア:

[(1, 257715666416), (2, 128857833208), (4, 64428916604), (8, 32214458302), (13, 19824282032), (16, 16107229151), (26, 9912141016), (52, 4956070508), (104, 2478035254), (208, 1239017627)]