16721020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{8117}}^1$

素因数の和:8229

約数の個数: 24

約数和(自身を含む): 35459424

約数和(自身を除く): 18738404

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 8117, 16234, 32468, 40585, 81170, 162340, 836051, 1672102, 3344204, 4180255, 8360510, 16721020]

約数ペア:

[(1, 16721020), (2, 8360510), (4, 4180255), (5, 3344204), (10, 1672102), (20, 836051), (103, 162340), (206, 81170), (412, 40585), (515, 32468), (1030, 16234), (2060, 8117)]