19809445

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{607}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 24427008

約数和(自身を除く): 4617563

約数列:

[1, 5, 61, 107, 305, 535, 607, 3035, 6527, 32635, 37027, 64949, 185135, 324745, 3961889, 19809445]

約数ペア:

[(1, 19809445), (5, 3961889), (61, 324745), (107, 185135), (305, 64949), (535, 37027), (607, 32635), (3035, 6527)]