16821020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{12553}}^1$

素因数の和:12629

約数の個数: 24

約数和(自身を含む): 35854224

約数和(自身を除く): 19033204

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 12553, 25106, 50212, 62765, 125530, 251060, 841051, 1682102, 3364204, 4205255, 8410510, 16821020]

約数ペア:

[(1, 16821020), (2, 8410510), (4, 4205255), (5, 3364204), (10, 1682102), (20, 841051), (67, 251060), (134, 125530), (268, 62765), (335, 50212), (670, 25106), (1340, 12553)]