20978969

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2609}}^1$

素因数の和:2680

約数の個数: 16

約数和(自身を含む): 24805440

約数和(自身を除く): 3826471

約数列:

[1, 11, 17, 43, 187, 473, 731, 2609, 8041, 28699, 44353, 112187, 487883, 1234057, 1907179, 20978969]

約数ペア:

[(1, 20978969), (11, 1907179), (17, 1234057), (43, 487883), (187, 112187), (473, 44353), (731, 28699), (2609, 8041)]