18728619

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2213}}^1$

素因数の和:2267

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 13011285

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2213, 2821, 6639, 8463, 15491, 28769, 46473, 68603, 86307, 201383, 205809, 480221, 604149, 891839, 1440663, 2675517, 6242873, 18728619]

約数ペア:

[(1, 18728619), (3, 6242873), (7, 2675517), (13, 1440663), (21, 891839), (31, 604149), (39, 480221), (91, 205809), (93, 201383), (217, 86307), (273, 68603), (403, 46473), (651, 28769), (1209, 15491), (2213, 8463), (2821, 6639)]