21056255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1231}}^1$

素因数の和:1558

約数の個数: 16

約数和(自身を含む): 27675648

約数和(自身を除く): 6619393

約数列:

[1, 5, 11, 55, 311, 1231, 1555, 3421, 6155, 13541, 17105, 67705, 382841, 1914205, 4211251, 21056255]

約数ペア:

[(1, 21056255), (5, 4211251), (11, 1914205), (55, 382841), (311, 67705), (1231, 17105), (1555, 13541), (3421, 6155)]