1821520

素因数分解:

$2^4\times 5^1\times {\mathrm{22769}}^1$

素因数の和:22782

約数の個数: 20

約数和(自身を含む): 4235220

約数和(自身を除く): 2413700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22769, 45538, 91076, 113845, 182152, 227690, 364304, 455380, 910760, 1821520]

約数ペア:

[(1, 1821520), (2, 910760), (4, 455380), (5, 364304), (8, 227690), (10, 182152), (16, 113845), (20, 91076), (40, 45538), (80, 22769)]