20512180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78893}}^1$

素因数の和:78915

約数の個数: 24

約数和(自身を含む): 46389672

約数和(自身を除く): 25877492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78893, 157786, 315572, 394465, 788930, 1025609, 1577860, 2051218, 4102436, 5128045, 10256090, 20512180]

約数ペア:

[(1, 20512180), (2, 10256090), (4, 5128045), (5, 4102436), (10, 2051218), (13, 1577860), (20, 1025609), (26, 788930), (52, 394465), (65, 315572), (130, 157786), (260, 78893)]