28764309

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{72091}}^1$

素因数の和:72120

約数の個数: 16

約数和(自身を含む): 46138880

約数和(自身を除く): 17374571

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 72091, 216273, 504637, 1369729, 1513911, 4109187, 9588103, 28764309]

約数ペア:

[(1, 28764309), (3, 9588103), (7, 4109187), (19, 1513911), (21, 1369729), (57, 504637), (133, 216273), (399, 72091)]