257992587

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{415447}}^1$

素因数の和:415479

約数の個数: 16

約数和(自身を含む): 398830080

約数和(自身を除く): 140837493

約数列:

[1, 3, 9, 23, 27, 69, 207, 621, 415447, 1246341, 3739023, 9555281, 11217069, 28665843, 85997529, 257992587]

約数ペア:

[(1, 257992587), (3, 85997529), (9, 28665843), (23, 11217069), (27, 9555281), (69, 3739023), (207, 1246341), (621, 415447)]