1298320

素因数分解:

$2^4\times 5^1\times {\mathrm{16229}}^1$

素因数の和:16242

約数の個数: 20

約数和(自身を含む): 3018780

約数和(自身を除く): 1720460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16229, 32458, 64916, 81145, 129832, 162290, 259664, 324580, 649160, 1298320]

約数ペア:

[(1, 1298320), (2, 649160), (4, 324580), (5, 259664), (8, 162290), (10, 129832), (16, 81145), (20, 64916), (40, 32458), (80, 16229)]