256831497

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:495

約数の個数: 48

約数和(自身を含む): 415833600

約数和(自身を除く): 159002103

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 169, 279, 403, 419, 507, 1209, 1257, 1521, 2197, 3627, 3771, 5239, 5447, 6591, 12989, 15717, 16341, 19773, 38967, 47151, 49023, 68107, 70811, 116901, 168857, 204321, 212433, 506571, 612963, 637299, 920543, 1519713, 2195141, 2761629, 6585423, 8284887, 19756269, 28536833, 85610499, 256831497]

約数ペア:

[(1, 256831497), (3, 85610499), (9, 28536833), (13, 19756269), (31, 8284887), (39, 6585423), (93, 2761629), (117, 2195141), (169, 1519713), (279, 920543), (403, 637299), (419, 612963), (507, 506571), (1209, 212433), (1257, 204321), (1521, 168857), (2197, 116901), (3627, 70811), (3771, 68107), (5239, 49023), (5447, 47151), (6591, 38967), (12989, 19773), (15717, 16341)]