209916368

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{305111}}^1$

素因数の和:305162

約数の個数: 20

約数和(自身を含む): 416172768

約数和(自身を除く): 206256400

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 305111, 610222, 1220444, 2440888, 4881776, 13119773, 26239546, 52479092, 104958184, 209916368]

約数ペア:

[(1, 209916368), (2, 104958184), (4, 52479092), (8, 26239546), (16, 13119773), (43, 4881776), (86, 2440888), (172, 1220444), (344, 610222), (688, 305111)]