255969

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 449280

約数和(自身を除く): 193311

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 239, 357, 717, 1071, 1673, 2151, 4063, 5019, 12189, 15057, 28441, 36567, 85323, 255969]

約数ペア:

[(1, 255969), (3, 85323), (7, 36567), (9, 28441), (17, 15057), (21, 12189), (51, 5019), (63, 4063), (119, 2151), (153, 1673), (239, 1071), (357, 717)]