21171953

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2633}}^1$

素因数の和:2704

約数の個数: 16

約数和(自身を含む): 25033536

約数和(自身を除く): 3861583

約数列:

[1, 11, 17, 43, 187, 473, 731, 2633, 8041, 28963, 44761, 113219, 492371, 1245409, 1924723, 21171953]

約数ペア:

[(1, 21171953), (11, 1924723), (17, 1245409), (43, 492371), (187, 113219), (473, 44761), (731, 28963), (2633, 8041)]