20917089

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 33120000

約数和(自身を除く): 12202911

約数列:

[1, 3, 9, 17, 27, 51, 153, 199, 229, 459, 597, 687, 1791, 2061, 3383, 3893, 5373, 6183, 10149, 11679, 30447, 35037, 45571, 91341, 105111, 136713, 410139, 774707, 1230417, 2324121, 6972363, 20917089]

約数ペア:

[(1, 20917089), (3, 6972363), (9, 2324121), (17, 1230417), (27, 774707), (51, 410139), (153, 136713), (199, 105111), (229, 91341), (459, 45571), (597, 35037), (687, 30447), (1791, 11679), (2061, 10149), (3383, 6183), (3893, 5373)]