20616428

素因数分解:

$2^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1361}}^1$

素因数の和:1913

約数の個数: 24

約数和(自身を含む): 41339424

約数和(自身を除く): 20722996

約数列:

[1, 2, 4, 7, 14, 28, 541, 1082, 1361, 2164, 2722, 3787, 5444, 7574, 9527, 15148, 19054, 38108, 736301, 1472602, 2945204, 5154107, 10308214, 20616428]

約数ペア:

[(1, 20616428), (2, 10308214), (4, 5154107), (7, 2945204), (14, 1472602), (28, 736301), (541, 38108), (1082, 19054), (1361, 15148), (2164, 9527), (2722, 7574), (3787, 5444)]