19878085

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{2521}}^1$

素因数の和:2628

約数の個数: 16

約数和(自身を含む): 25421760

約数和(自身を除く): 5543675

約数列:

[1, 5, 19, 83, 95, 415, 1577, 2521, 7885, 12605, 47899, 209243, 239495, 1046215, 3975617, 19878085]

約数ペア:

[(1, 19878085), (5, 3975617), (19, 1046215), (83, 239495), (95, 209243), (415, 47899), (1577, 12605), (2521, 7885)]