21808807

素因数分解:

${\mathrm{17}}^3\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:267

約数の個数: 16

約数和(自身を含む): 24304320

約数和(自身を除く): 2495513

約数列:

[1, 17, 23, 193, 289, 391, 3281, 4439, 4913, 6647, 55777, 75463, 112999, 948209, 1282871, 21808807]

約数ペア:

[(1, 21808807), (17, 1282871), (23, 948209), (193, 112999), (289, 75463), (391, 55777), (3281, 6647), (4439, 4913)]