19936496

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30391}}^1$

素因数の和:30440

約数の個数: 20

約数和(自身を含む): 39570384

約数和(自身を除く): 19633888

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30391, 60782, 121564, 243128, 486256, 1246031, 2492062, 4984124, 9968248, 19936496]

約数ペア:

[(1, 19936496), (2, 9968248), (4, 4984124), (8, 2492062), (16, 1246031), (41, 486256), (82, 243128), (164, 121564), (328, 60782), (656, 30391)]