19728744921

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{541}}^1\times {\mathrm{139721}}^1$

素因数の和:140297

約数の個数: 24

約数和(自身を含む): 29534436360

約数和(自身を除く): 9805691439

約数列:

[1, 3, 9, 29, 87, 261, 541, 1623, 4869, 15689, 47067, 139721, 141201, 419163, 1257489, 4051909, 12155727, 36467181, 75589061, 226767183, 680301549, 2192082769, 6576248307, 19728744921]

約数ペア:

[(1, 19728744921), (3, 6576248307), (9, 2192082769), (29, 680301549), (87, 226767183), (261, 75589061), (541, 36467181), (1623, 12155727), (4869, 4051909), (15689, 1257489), (47067, 419163), (139721, 141201)]