21216787

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1033}}^1$

素因数の和:1122

約数の個数: 16

約数和(自身を含む): 23823360

約数和(自身を除く): 2606573

約数列:

[1, 19, 23, 47, 437, 893, 1033, 1081, 19627, 20539, 23759, 48551, 451421, 922469, 1116673, 21216787]

約数ペア:

[(1, 21216787), (19, 1116673), (23, 922469), (47, 451421), (437, 48551), (893, 23759), (1033, 20539), (1081, 19627)]