388648.00000000

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28657}}^1$

素因数の和:28708

約数の個数: 20

約数和(自身を含む): 39089512

約数和(自身を除く): 19373496

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28657, 57314, 114628, 229256, 458512, 1232251, 2464502, 4929004, 9858008, 19716016]

約数ペア:

[(1, 19716016), (2, 9858008), (4, 4929004), (8, 2464502), (16, 1232251), (43, 458512), (86, 229256), (172, 114628), (344, 57314), (688, 28657)]