11985640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2749}}^1$

素因数の和:2869

約数の個数: 32

約数和(自身を含む): 27225000

約数和(自身を除く): 15239360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 2749, 4360, 5498, 10996, 13745, 21992, 27490, 54980, 109960, 299641, 599282, 1198564, 1498205, 2397128, 2996410, 5992820, 11985640]

約数ペア:

[(1, 11985640), (2, 5992820), (4, 2996410), (5, 2397128), (8, 1498205), (10, 1198564), (20, 599282), (40, 299641), (109, 109960), (218, 54980), (436, 27490), (545, 21992), (872, 13745), (1090, 10996), (2180, 5498), (2749, 4360)]