21490256

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{5107}}^1$

素因数の和:5378

約数の個数: 20

約数和(自身を含む): 41803872

約数和(自身を除く): 20313616

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 5107, 10214, 20428, 40856, 81712, 1343141, 2686282, 5372564, 10745128, 21490256]

約数ペア:

[(1, 21490256), (2, 10745128), (4, 5372564), (8, 2686282), (16, 1343141), (263, 81712), (526, 40856), (1052, 20428), (2104, 10214), (4208, 5107)]