21198328

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37321}}^1$

素因数の和:37398

約数の個数: 16

約数和(自身を含む): 40307760

約数和(自身を除く): 19109432

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37321, 74642, 149284, 298568, 2649791, 5299582, 10599164, 21198328]

約数ペア:

[(1, 21198328), (2, 10599164), (4, 5299582), (8, 2649791), (71, 298568), (142, 149284), (284, 74642), (568, 37321)]