19889155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27817}}^1$

素因数の和:27846

約数の個数: 16

約数和(自身を含む): 28040544

約数和(自身を除く): 8151389

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27817, 139085, 305987, 361621, 1529935, 1808105, 3977831, 19889155]

約数ペア:

[(1, 19889155), (5, 3977831), (11, 1808105), (13, 1529935), (55, 361621), (65, 305987), (143, 139085), (715, 27817)]