28678209

素因数分解:

$3^1\times 7^1\times {\mathrm{479}}^1\times {\mathrm{2851}}^1$

素因数の和:3340

約数の個数: 16

約数和(自身を含む): 43806720

約数和(自身を除く): 15128511

約数列:

[1, 3, 7, 21, 479, 1437, 2851, 3353, 8553, 10059, 19957, 59871, 1365629, 4096887, 9559403, 28678209]

約数ペア:

[(1, 28678209), (3, 9559403), (7, 4096887), (21, 1365629), (479, 59871), (1437, 19957), (2851, 10059), (3353, 8553)]