21248665

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4297}}^1$

素因数の和:4368

約数の個数: 16

約数和(自身を含む): 27232128

約数和(自身を除く): 5983463

約数列:

[1, 5, 23, 43, 115, 215, 989, 4297, 4945, 21485, 98831, 184771, 494155, 923855, 4249733, 21248665]

約数ペア:

[(1, 21248665), (5, 4249733), (23, 923855), (43, 494155), (115, 184771), (215, 98831), (989, 21485), (4297, 4945)]