399778886

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{809269}}^1$

素因数の和:809303

約数の個数: 16

約数和(自身を含む): 679786800

約数和(自身を除く): 280007914

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 809269, 1618538, 10520497, 15376111, 21040994, 30752222, 199889443, 399778886]

約数ペア:

[(1, 399778886), (2, 199889443), (13, 30752222), (19, 21040994), (26, 15376111), (38, 10520497), (247, 1618538), (494, 809269)]