20845784

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10139}}^1$

素因数の和:10402

約数の個数: 16

約数和(自身を含む): 39241800

約数和(自身を除く): 18396016

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10139, 20278, 40556, 81112, 2605723, 5211446, 10422892, 20845784]

約数ペア:

[(1, 20845784), (2, 10422892), (4, 5211446), (8, 2605723), (257, 81112), (514, 40556), (1028, 20278), (2056, 10139)]