257945038

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{811}}^1\times {\mathrm{941}}^1$

素因数の和:1780

約数の個数: 24

約数和(自身を含む): 419932296

約数和(自身を除く): 161987258

約数列:

[1, 2, 13, 26, 169, 338, 811, 941, 1622, 1882, 10543, 12233, 21086, 24466, 137059, 159029, 274118, 318058, 763151, 1526302, 9920963, 19841926, 128972519, 257945038]

約数ペア:

[(1, 257945038), (2, 128972519), (13, 19841926), (26, 9920963), (169, 1526302), (338, 763151), (811, 318058), (941, 274118), (1622, 159029), (1882, 137059), (10543, 24466), (12233, 21086)]