28307839

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1999}}^1$

素因数の和:2047

約数の個数: 18

約数和(自身を含む): 34998000

約数和(自身を除く): 6690161

約数列:

[1, 7, 17, 49, 119, 289, 833, 1999, 2023, 13993, 14161, 33983, 97951, 237881, 577711, 1665167, 4043977, 28307839]

約数ペア:

[(1, 28307839), (7, 4043977), (17, 1665167), (49, 577711), (119, 237881), (289, 97951), (833, 33983), (1999, 14161), (2023, 13993)]