8266120

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1049}}^1$

素因数の和:1257

約数の個数: 32

約数和(自身を含む): 18711000

約数和(自身を除く): 10444880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1049, 1576, 1970, 2098, 3940, 4196, 5245, 7880, 8392, 10490, 20980, 41960, 206653, 413306, 826612, 1033265, 1653224, 2066530, 4133060, 8266120]

約数ペア:

[(1, 8266120), (2, 4133060), (4, 2066530), (5, 1653224), (8, 1033265), (10, 826612), (20, 413306), (40, 206653), (197, 41960), (394, 20980), (788, 10490), (985, 8392), (1049, 7880), (1576, 5245), (1970, 4196), (2098, 3940)]