28821080

素因数分解:

$2^3\times 5^1\times {\mathrm{720527}}^1$

素因数の和:720538

約数の個数: 16

約数和(自身を含む): 64847520

約数和(自身を除く): 36026440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 720527, 1441054, 2882108, 3602635, 5764216, 7205270, 14410540, 28821080]

約数ペア:

[(1, 28821080), (2, 14410540), (4, 7205270), (5, 5764216), (8, 3602635), (10, 2882108), (20, 1441054), (40, 720527)]