290470579

素因数分解:

$7^4\times {\mathrm{311}}^1\times {\mathrm{389}}^1$

素因数の和:728

約数の個数: 20

約数和(自身を含む): 340825680

約数和(自身を除く): 50355101

約数列:

[1, 7, 49, 311, 343, 389, 2177, 2401, 2723, 15239, 19061, 106673, 120979, 133427, 746711, 846853, 933989, 5927971, 41495797, 290470579]

約数ペア:

[(1, 290470579), (7, 41495797), (49, 5927971), (311, 933989), (343, 846853), (389, 746711), (2177, 133427), (2401, 120979), (2723, 106673), (15239, 19061)]