21030405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11587}}^1$

素因数の和:11617

約数の個数: 24

約数和(自身を含む): 36988896

約数和(自身を除く): 15958491

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11587, 34761, 57935, 127457, 173805, 382371, 637285, 1402027, 1911855, 4206081, 7010135, 21030405]

約数ペア:

[(1, 21030405), (3, 7010135), (5, 4206081), (11, 1911855), (15, 1402027), (33, 637285), (55, 382371), (121, 173805), (165, 127457), (363, 57935), (605, 34761), (1815, 11587)]