128320

素因数分解:

$2^6\times 5^1\times {\mathrm{401}}^1$

素因数の和:418

約数の個数: 28

約数和(自身を含む): 306324

約数和(自身を除く): 178004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 401, 802, 1604, 2005, 3208, 4010, 6416, 8020, 12832, 16040, 25664, 32080, 64160, 128320]

約数ペア:

[(1, 128320), (2, 64160), (4, 32080), (5, 25664), (8, 16040), (10, 12832), (16, 8020), (20, 6416), (32, 4010), (40, 3208), (64, 2005), (80, 1604), (160, 802), (320, 401)]