21688678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42863}}^1$

素因数の和:42899

約数の個数: 16

約数和(自身を含む): 37034496

約数和(自身を除く): 15345818

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42863, 85726, 471493, 942986, 985849, 1971698, 10844339, 21688678]

約数ペア:

[(1, 21688678), (2, 10844339), (11, 1971698), (22, 985849), (23, 942986), (46, 471493), (253, 85726), (506, 42863)]