21897640

素因数分解:

$2^3\times 5^1\times {\mathrm{547441}}^1$

素因数の和:547452

約数の個数: 16

約数和(自身を含む): 49269780

約数和(自身を除く): 27372140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547441, 1094882, 2189764, 2737205, 4379528, 5474410, 10948820, 21897640]

約数ペア:

[(1, 21897640), (2, 10948820), (4, 5474410), (5, 4379528), (8, 2737205), (10, 2189764), (20, 1094882), (40, 547441)]