256160

素因数分解:

$2^5\times 5^1\times {\mathrm{1601}}^1$

素因数の和:1616

約数の個数: 24

約数和(自身を含む): 605556

約数和(自身を除く): 349396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1601, 3202, 6404, 8005, 12808, 16010, 25616, 32020, 51232, 64040, 128080, 256160]

約数ペア:

[(1, 256160), (2, 128080), (4, 64040), (5, 51232), (8, 32020), (10, 25616), (16, 16010), (20, 12808), (32, 8005), (40, 6404), (80, 3202), (160, 1601)]