28682913

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71887}}^1$

素因数の和:71916

約数の個数: 16

約数和(自身を含む): 46008320

約数和(自身を除く): 17325407

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71887, 215661, 503209, 1365853, 1509627, 4097559, 9560971, 28682913]

約数ペア:

[(1, 28682913), (3, 9560971), (7, 4097559), (19, 1509627), (21, 1365853), (57, 503209), (133, 215661), (399, 71887)]