28209807

素因数分解:

$3^2\times {\mathrm{137}}^2\times {\mathrm{167}}^1$

素因数の和:447

約数の個数: 18

約数和(自身を含む): 41292888

約数和(自身を除く): 13083081

約数列:

[1, 3, 9, 137, 167, 411, 501, 1233, 1503, 18769, 22879, 56307, 68637, 168921, 205911, 3134423, 9403269, 28209807]

約数ペア:

[(1, 28209807), (3, 9403269), (9, 3134423), (137, 205911), (167, 168921), (411, 68637), (501, 56307), (1233, 22879), (1503, 18769)]