256007878

素因数分解:

$2^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{28439}}^1$

素因数の和:29091

約数の個数: 16

約数和(自身を含む): 439568640

約数和(自身を除く): 183560762

約数列:

[1, 2, 7, 14, 643, 1286, 4501, 9002, 28439, 56878, 199073, 398146, 18286277, 36572554, 128003939, 256007878]

約数ペア:

[(1, 256007878), (2, 128003939), (7, 36572554), (14, 18286277), (643, 398146), (1286, 199073), (4501, 56878), (9002, 28439)]