205485080

素因数分解:

$2^3\times 5^1\times {\mathrm{5137127}}^1$

素因数の和:5137138

約数の個数: 16

約数和(自身を含む): 462341520

約数和(自身を除く): 256856440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5137127, 10274254, 20548508, 25685635, 41097016, 51371270, 102742540, 205485080]

約数ペア:

[(1, 205485080), (2, 102742540), (4, 51371270), (5, 41097016), (8, 25685635), (10, 20548508), (20, 10274254), (40, 5137127)]