21240808

素因数分解:

$2^3\times {\mathrm{193}}^1\times {\mathrm{13757}}^1$

素因数の和:13956

約数の個数: 16

約数和(自身を含む): 40035780

約数和(自身を除く): 18794972

約数列:

[1, 2, 4, 8, 193, 386, 772, 1544, 13757, 27514, 55028, 110056, 2655101, 5310202, 10620404, 21240808]

約数ペア:

[(1, 21240808), (2, 10620404), (4, 5310202), (8, 2655101), (193, 110056), (386, 55028), (772, 27514), (1544, 13757)]