20720728

素因数分解:

$2^3\times 7^2\times {\mathrm{52859}}^1$

素因数の和:52879

約数の個数: 24

約数和(自身を含む): 45195300

約数和(自身を除く): 24474572

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 52859, 105718, 211436, 370013, 422872, 740026, 1480052, 2590091, 2960104, 5180182, 10360364, 20720728]

約数ペア:

[(1, 20720728), (2, 10360364), (4, 5180182), (7, 2960104), (8, 2590091), (14, 1480052), (28, 740026), (49, 422872), (56, 370013), (98, 211436), (196, 105718), (392, 52859)]