28279517

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1997}}^1$

素因数の和:2045

約数の個数: 18

約数和(自身を含む): 34963002

約数和(自身を除く): 6683485

約数列:

[1, 7, 17, 49, 119, 289, 833, 1997, 2023, 13979, 14161, 33949, 97853, 237643, 577133, 1663501, 4039931, 28279517]

約数ペア:

[(1, 28279517), (7, 4039931), (17, 1663501), (49, 577133), (119, 237643), (289, 97853), (833, 33949), (1997, 14161), (2023, 13979)]