21003755

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2267}}^1$

素因数の和:2398

約数の個数: 16

約数和(自身を含む): 26943840

約数和(自身を除く): 5940085

約数列:

[1, 5, 17, 85, 109, 545, 1853, 2267, 9265, 11335, 38539, 192695, 247103, 1235515, 4200751, 21003755]

約数ペア:

[(1, 21003755), (5, 4200751), (17, 1235515), (85, 247103), (109, 192695), (545, 38539), (1853, 11335), (2267, 9265)]