21359991

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1\times {\mathrm{283}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 28945280

約数和(自身を除く): 7585289

約数列:

[1, 3, 139, 181, 283, 417, 543, 849, 25159, 39337, 51223, 75477, 118011, 153669, 7119997, 21359991]

約数ペア:

[(1, 21359991), (3, 7119997), (139, 153669), (181, 118011), (283, 75477), (417, 51223), (543, 39337), (849, 25159)]