256887

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:119

約数の個数: 24

約数和(自身を含む): 415584

約数和(自身を除く): 158697

約数列:

[1, 3, 9, 17, 23, 51, 69, 73, 153, 207, 219, 391, 657, 1173, 1241, 1679, 3519, 3723, 5037, 11169, 15111, 28543, 85629, 256887]

約数ペア:

[(1, 256887), (3, 85629), (9, 28543), (17, 15111), (23, 11169), (51, 5037), (69, 3723), (73, 3519), (153, 1679), (207, 1241), (219, 1173), (391, 657)]