20347720

素因数分解:

$2^3\times 5^1\times {\mathrm{508693}}^1$

素因数の和:508704

約数の個数: 16

約数和(自身を含む): 45782460

約数和(自身を除く): 25434740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508693, 1017386, 2034772, 2543465, 4069544, 5086930, 10173860, 20347720]

約数ペア:

[(1, 20347720), (2, 10173860), (4, 5086930), (5, 4069544), (8, 2543465), (10, 2034772), (20, 1017386), (40, 508693)]