1621520

素因数分解:

$2^4\times 5^1\times {\mathrm{20269}}^1$

素因数の和:20282

約数の個数: 20

約数和(自身を含む): 3770220

約数和(自身を除く): 2148700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20269, 40538, 81076, 101345, 162152, 202690, 324304, 405380, 810760, 1621520]

約数ペア:

[(1, 1621520), (2, 810760), (4, 405380), (5, 324304), (8, 202690), (10, 162152), (16, 101345), (20, 81076), (40, 40538), (80, 20269)]