26778519

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{19447}}^1$

素因数の和:19476

約数の個数: 20

約数和(自身を含む): 42357744

約数和(自身を除く): 15579225

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 19447, 58341, 175023, 330599, 525069, 991797, 1575207, 2975391, 8926173, 26778519]

約数ペア:

[(1, 26778519), (3, 8926173), (9, 2975391), (17, 1575207), (27, 991797), (51, 525069), (81, 330599), (153, 175023), (459, 58341), (1377, 19447)]