21989539

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{419}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 3976541

約数列:

[1, 11, 13, 143, 367, 419, 4037, 4609, 4771, 5447, 52481, 59917, 153773, 1691503, 1999049, 21989539]

約数ペア:

[(1, 21989539), (11, 1999049), (13, 1691503), (143, 153773), (367, 59917), (419, 52481), (4037, 5447), (4609, 4771)]