21009728

素因数分解:

$2^6\times {\mathrm{328277}}^1$

素因数の和:328289

約数の個数: 14

約数和(自身を含む): 41691306

約数和(自身を除く): 20681578

約数列:

[1, 2, 4, 8, 16, 32, 64, 328277, 656554, 1313108, 2626216, 5252432, 10504864, 21009728]

約数ペア:

[(1, 21009728), (2, 10504864), (4, 5252432), (8, 2626216), (16, 1313108), (32, 656554), (64, 328277)]