19509040

素因数分解:

$2^4\times 5^1\times {\mathrm{243863}}^1$

素因数の和:243876

約数の個数: 20

約数和(自身を含む): 45358704

約数和(自身を除く): 25849664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243863, 487726, 975452, 1219315, 1950904, 2438630, 3901808, 4877260, 9754520, 19509040]

約数ペア:

[(1, 19509040), (2, 9754520), (4, 4877260), (5, 3901808), (8, 2438630), (10, 1950904), (16, 1219315), (20, 975452), (40, 487726), (80, 243863)]