21812589

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 33384000

約数和(自身を除く): 11571411

約数列:

[1, 3, 9, 19, 57, 171, 199, 597, 641, 1791, 1923, 3781, 5769, 11343, 12179, 34029, 36537, 109611, 127559, 382677, 1148031, 2423621, 7270863, 21812589]

約数ペア:

[(1, 21812589), (3, 7270863), (9, 2423621), (19, 1148031), (57, 382677), (171, 127559), (199, 109611), (597, 36537), (641, 34029), (1791, 12179), (1923, 11343), (3781, 5769)]