256139

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:110

約数の個数: 16

約数和(自身を含む): 312480

約数和(自身を除く): 56341

約数列:

[1, 13, 17, 19, 61, 221, 247, 323, 793, 1037, 1159, 4199, 13481, 15067, 19703, 256139]

約数ペア:

[(1, 256139), (13, 19703), (17, 15067), (19, 13481), (61, 4199), (221, 1159), (247, 1037), (323, 793)]