16621520

素因数分解:

$2^4\times 5^1\times {\mathrm{207769}}^1$

素因数の和:207782

約数の個数: 20

約数和(自身を含む): 38645220

約数和(自身を除く): 22023700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 207769, 415538, 831076, 1038845, 1662152, 2077690, 3324304, 4155380, 8310760, 16621520]

約数ペア:

[(1, 16621520), (2, 8310760), (4, 4155380), (5, 3324304), (8, 2077690), (10, 1662152), (16, 1038845), (20, 831076), (40, 415538), (80, 207769)]