19833640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4549}}^1$

素因数の和:4669

約数の個数: 32

約数和(自身を含む): 45045000

約数和(自身を除く): 25211360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4549, 9098, 18196, 22745, 36392, 45490, 90980, 181960, 495841, 991682, 1983364, 2479205, 3966728, 4958410, 9916820, 19833640]

約数ペア:

[(1, 19833640), (2, 9916820), (4, 4958410), (5, 3966728), (8, 2479205), (10, 1983364), (20, 991682), (40, 495841), (109, 181960), (218, 90980), (436, 45490), (545, 36392), (872, 22745), (1090, 18196), (2180, 9098), (4360, 4549)]