21285468827

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{22863017}}^1$

素因数の和:22863050

約数の個数: 12

約数和(自身を含む): 26063840520

約数和(自身を除く): 4778371693

約数列:

[1, 7, 19, 49, 133, 931, 22863017, 160041119, 434397323, 1120287833, 3040781261, 21285468827]

約数ペア:

[(1, 21285468827), (7, 3040781261), (19, 1120287833), (49, 434397323), (133, 160041119), (931, 22863017)]