12904816

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{18757}}^1$

素因数の和:18808

約数の個数: 20

約数和(自身を含む): 25585912

約数和(自身を除く): 12681096

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 18757, 37514, 75028, 150056, 300112, 806551, 1613102, 3226204, 6452408, 12904816]

約数ペア:

[(1, 12904816), (2, 6452408), (4, 3226204), (8, 1613102), (16, 806551), (43, 300112), (86, 150056), (172, 75028), (344, 37514), (688, 18757)]