257619321

素因数分解:

$3^2\times {\mathrm{43}}^2\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:342

約数の個数: 36

約数和(自身を含む): 387148788

約数和(自身を除く): 129529467

約数列:

[1, 3, 9, 43, 113, 129, 137, 339, 387, 411, 1017, 1233, 1849, 4859, 5547, 5891, 14577, 15481, 16641, 17673, 43731, 46443, 53019, 139329, 208937, 253313, 626811, 665683, 759939, 1880433, 1997049, 2279817, 5991147, 28624369, 85873107, 257619321]

約数ペア:

[(1, 257619321), (3, 85873107), (9, 28624369), (43, 5991147), (113, 2279817), (129, 1997049), (137, 1880433), (339, 759939), (387, 665683), (411, 626811), (1017, 253313), (1233, 208937), (1849, 139329), (4859, 53019), (5547, 46443), (5891, 43731), (14577, 17673), (15481, 16641)]