256347

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 457184

約数和(自身を除く): 200837

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 313, 819, 939, 2191, 2817, 4069, 6573, 12207, 19719, 28483, 36621, 85449, 256347]

約数ペア:

[(1, 256347), (3, 85449), (7, 36621), (9, 28483), (13, 19719), (21, 12207), (39, 6573), (63, 4069), (91, 2817), (117, 2191), (273, 939), (313, 819)]