51203920

素因数分解:

$2^4\times 5^1\times {\mathrm{640049}}^1$

素因数の和:640062

約数の個数: 20

約数和(自身を含む): 119049300

約数和(自身を除く): 67845380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640049, 1280098, 2560196, 3200245, 5120392, 6400490, 10240784, 12800980, 25601960, 51203920]

約数ペア:

[(1, 51203920), (2, 25601960), (4, 12800980), (5, 10240784), (8, 6400490), (10, 5120392), (16, 3200245), (20, 2560196), (40, 1280098), (80, 640049)]