221412848

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{321821}}^1$

素因数の和:321872

約数の個数: 20

約数和(自身を含む): 438965208

約数和(自身を除く): 217552360

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 321821, 643642, 1287284, 2574568, 5149136, 13838303, 27676606, 55353212, 110706424, 221412848]

約数ペア:

[(1, 221412848), (2, 110706424), (4, 55353212), (8, 27676606), (16, 13838303), (43, 5149136), (86, 2574568), (172, 1287284), (344, 643642), (688, 321821)]