20390404

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{311}}^1\times {\mathrm{443}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 36848448

約数和(自身を除く): 16458044

約数列:

[1, 2, 4, 37, 74, 148, 311, 443, 622, 886, 1244, 1772, 11507, 16391, 23014, 32782, 46028, 65564, 137773, 275546, 551092, 5097601, 10195202, 20390404]

約数ペア:

[(1, 20390404), (2, 10195202), (4, 5097601), (37, 551092), (74, 275546), (148, 137773), (311, 65564), (443, 46028), (622, 32782), (886, 23014), (1244, 16391), (1772, 11507)]