256500520

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{43037}}^1$

素因数の和:43197

約数の個数: 32

約数和(自身を含む): 581013000

約数和(自身を除く): 324512480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 43037, 86074, 172148, 215185, 344296, 430370, 860740, 1721480, 6412513, 12825026, 25650052, 32062565, 51300104, 64125130, 128250260, 256500520]

約数ペア:

[(1, 256500520), (2, 128250260), (4, 64125130), (5, 51300104), (8, 32062565), (10, 25650052), (20, 12825026), (40, 6412513), (149, 1721480), (298, 860740), (596, 430370), (745, 344296), (1192, 215185), (1490, 172148), (2980, 86074), (5960, 43037)]