12781585

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1621}}^1$

素因数の和:1728

約数の個数: 16

約数和(自身を含む): 16349760

約数和(自身を除く): 3568175

約数列:

[1, 5, 19, 83, 95, 415, 1577, 1621, 7885, 8105, 30799, 134543, 153995, 672715, 2556317, 12781585]

約数ペア:

[(1, 12781585), (5, 2556317), (19, 672715), (83, 153995), (95, 134543), (415, 30799), (1577, 8105), (1621, 7885)]