1280320

素因数分解:

$2^6\times 5^1\times {\mathrm{4001}}^1$

素因数の和:4018

約数の個数: 28

約数和(自身を含む): 3049524

約数和(自身を除く): 1769204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 4001, 8002, 16004, 20005, 32008, 40010, 64016, 80020, 128032, 160040, 256064, 320080, 640160, 1280320]

約数ペア:

[(1, 1280320), (2, 640160), (4, 320080), (5, 256064), (8, 160040), (10, 128032), (16, 80020), (20, 64016), (32, 40010), (40, 32008), (64, 20005), (80, 16004), (160, 8002), (320, 4001)]