256514559

素因数分解:

$3^1\times 7^2\times {\mathrm{479}}^1\times {\mathrm{3643}}^1$

素因数の和:4139

約数の個数: 24

約数和(自身を含む): 398799360

約数和(自身を除く): 142284801

約数列:

[1, 3, 7, 21, 49, 147, 479, 1437, 3353, 3643, 10059, 10929, 23471, 25501, 70413, 76503, 178507, 535521, 1744997, 5234991, 12214979, 36644937, 85504853, 256514559]

約数ペア:

[(1, 256514559), (3, 85504853), (7, 36644937), (21, 12214979), (49, 5234991), (147, 1744997), (479, 535521), (1437, 178507), (3353, 76503), (3643, 70413), (10059, 25501), (10929, 23471)]