28709217

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{3793}}^1$

素因数の和:3857

約数の個数: 18

約数和(自身を含む): 42959462

約数和(自身を除く): 14250245

約数列:

[1, 3, 9, 29, 87, 261, 841, 2523, 3793, 7569, 11379, 34137, 109997, 329991, 989973, 3189913, 9569739, 28709217]

約数ペア:

[(1, 28709217), (3, 9569739), (9, 3189913), (29, 989973), (87, 329991), (261, 109997), (841, 34137), (2523, 11379), (3793, 7569)]