256272020

素因数分解:

$2^2\times 5^1\times {\mathrm{12813601}}^1$

素因数の和:12813610

約数の個数: 12

約数和(自身を含む): 538171284

約数和(自身を除く): 281899264

約数列:

[1, 2, 4, 5, 10, 20, 12813601, 25627202, 51254404, 64068005, 128136010, 256272020]

約数ペア:

[(1, 256272020), (2, 128136010), (4, 64068005), (5, 51254404), (10, 25627202), (20, 12813601)]