19890760

素因数分解:

$2^3\times 5^1\times {\mathrm{497269}}^1$

素因数の和:497280

約数の個数: 16

約数和(自身を含む): 44754300

約数和(自身を除く): 24863540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497269, 994538, 1989076, 2486345, 3978152, 4972690, 9945380, 19890760]

約数ペア:

[(1, 19890760), (2, 9945380), (4, 4972690), (5, 3978152), (8, 2486345), (10, 1989076), (20, 994538), (40, 497269)]