28720336

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{43781}}^1$

素因数の和:43830

約数の個数: 20

約数和(自身を含む): 57004164

約数和(自身を除く): 28283828

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 43781, 87562, 175124, 350248, 700496, 1795021, 3590042, 7180084, 14360168, 28720336]

約数ペア:

[(1, 28720336), (2, 14360168), (4, 7180084), (8, 3590042), (16, 1795021), (41, 700496), (82, 350248), (164, 175124), (328, 87562), (656, 43781)]