31397249

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 36773688

約数和(自身を除く): 5376439

約数列:

[1, 13, 17, 61, 137, 221, 289, 793, 1037, 1781, 2329, 3757, 8357, 13481, 17629, 30277, 39593, 108641, 142069, 229177, 514709, 1846897, 2415173, 31397249]

約数ペア:

[(1, 31397249), (13, 2415173), (17, 1846897), (61, 514709), (137, 229177), (221, 142069), (289, 108641), (793, 39593), (1037, 30277), (1781, 17629), (2329, 13481), (3757, 8357)]