21913705

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 29925000

約数和(自身を除く): 8011295

約数列:

[1, 5, 11, 29, 55, 121, 145, 319, 605, 1249, 1595, 3509, 6245, 13739, 17545, 36221, 68695, 151129, 181105, 398431, 755645, 1992155, 4382741, 21913705]

約数ペア:

[(1, 21913705), (5, 4382741), (11, 1992155), (29, 755645), (55, 398431), (121, 181105), (145, 151129), (319, 68695), (605, 36221), (1249, 17545), (1595, 13739), (3509, 6245)]