20425779

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10859}}^1$

素因数の和:10895

約数の個数: 24

約数和(自身を含む): 33883200

約数和(自身を除く): 13457421

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 10859, 32577, 97731, 119449, 206321, 358347, 618963, 1075041, 1856889, 2269531, 6808593, 20425779]

約数ペア:

[(1, 20425779), (3, 6808593), (9, 2269531), (11, 1856889), (19, 1075041), (33, 618963), (57, 358347), (99, 206321), (171, 119449), (209, 97731), (627, 32577), (1881, 10859)]