21438989

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8819}}^1$

素因数の和:8860

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 5232691

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8819, 97009, 114647, 149923, 1261117, 1649153, 1948999, 21438989]

約数ペア:

[(1, 21438989), (11, 1948999), (13, 1649153), (17, 1261117), (143, 149923), (187, 114647), (221, 97009), (2431, 8819)]