21000786774

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1\times {\mathrm{504269}}^1$

素因数の和:504916

約数の個数: 32

約数和(自身を含む): 45892604160

約数和(自身を除く): 24891817386

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 631, 1262, 1893, 3786, 6941, 13882, 20823, 41646, 504269, 1008538, 1512807, 3025614, 5546959, 11093918, 16640877, 33281754, 318193739, 636387478, 954581217, 1909162434, 3500131129, 7000262258, 10500393387, 21000786774]

約数ペア:

[(1, 21000786774), (2, 10500393387), (3, 7000262258), (6, 3500131129), (11, 1909162434), (22, 954581217), (33, 636387478), (66, 318193739), (631, 33281754), (1262, 16640877), (1893, 11093918), (3786, 5546959), (6941, 3025614), (13882, 1512807), (20823, 1008538), (41646, 504269)]