243318520

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{55807}}^1$

素因数の和:55927

約数の個数: 32

約数和(自身を含む): 552499200

約数和(自身を除く): 309180680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 55807, 111614, 223228, 279035, 446456, 558070, 1116140, 2232280, 6082963, 12165926, 24331852, 30414815, 48663704, 60829630, 121659260, 243318520]

約数ペア:

[(1, 243318520), (2, 121659260), (4, 60829630), (5, 48663704), (8, 30414815), (10, 24331852), (20, 12165926), (40, 6082963), (109, 2232280), (218, 1116140), (436, 558070), (545, 446456), (872, 279035), (1090, 223228), (2180, 111614), (4360, 55807)]