420496

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:690

約数の個数: 20

約数和(自身を含む): 835884

約数和(自身を除く): 415388

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 641, 656, 1282, 2564, 5128, 10256, 26281, 52562, 105124, 210248, 420496]

約数ペア:

[(1, 420496), (2, 210248), (4, 105124), (8, 52562), (16, 26281), (41, 10256), (82, 5128), (164, 2564), (328, 1282), (641, 656)]