19956920

素因数分解:

$2^3\times 5^1\times {\mathrm{498923}}^1$

素因数の和:498934

約数の個数: 16

約数和(自身を含む): 44903160

約数和(自身を除く): 24946240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498923, 997846, 1995692, 2494615, 3991384, 4989230, 9978460, 19956920]

約数ペア:

[(1, 19956920), (2, 9978460), (4, 4989230), (5, 3991384), (8, 2494615), (10, 1995692), (20, 997846), (40, 498923)]