20428816

素因数分解:

$2^4\times {\mathrm{353}}^1\times {\mathrm{3617}}^1$

素因数の和:3978

約数の個数: 20

約数和(自身を含む): 39703932

約数和(自身を除く): 19275116

約数列:

[1, 2, 4, 8, 16, 353, 706, 1412, 2824, 3617, 5648, 7234, 14468, 28936, 57872, 1276801, 2553602, 5107204, 10214408, 20428816]

約数ペア:

[(1, 20428816), (2, 10214408), (4, 5107204), (8, 2553602), (16, 1276801), (353, 57872), (706, 28936), (1412, 14468), (2824, 7234), (3617, 5648)]