21808592

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104849}}^1$

素因数の和:104870

約数の個数: 20

約数和(自身を含む): 45504900

約数和(自身を除く): 23696308

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104849, 209698, 419396, 838792, 1363037, 1677584, 2726074, 5452148, 10904296, 21808592]

約数ペア:

[(1, 21808592), (2, 10904296), (4, 5452148), (8, 2726074), (13, 1677584), (16, 1363037), (26, 838792), (52, 419396), (104, 209698), (208, 104849)]