21200619

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13669}}^1$

素因数の和:13730

約数の個数: 16

約数和(自身を含む): 31495680

約数和(自身を除く): 10295061

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13669, 41007, 150359, 451077, 642443, 1927329, 7066873, 21200619]

約数ペア:

[(1, 21200619), (3, 7066873), (11, 1927329), (33, 642443), (47, 451077), (141, 150359), (517, 41007), (1551, 13669)]