205758440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{119627}}^1$

素因数の和:119681

約数の個数: 32

約数和(自身を含む): 473726880

約数和(自身を除く): 267968440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 119627, 239254, 478508, 598135, 957016, 1196270, 2392540, 4785080, 5143961, 10287922, 20575844, 25719805, 41151688, 51439610, 102879220, 205758440]

約数ペア:

[(1, 205758440), (2, 102879220), (4, 51439610), (5, 41151688), (8, 25719805), (10, 20575844), (20, 10287922), (40, 5143961), (43, 4785080), (86, 2392540), (172, 1196270), (215, 957016), (344, 598135), (430, 478508), (860, 239254), (1720, 119627)]