505280405

素因数分解:

$5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{20023}}^1$

素因数の和:20145

約数の個数: 24

約数和(自身を含む): 712213632

約数和(自身を除く): 206933227

約数列:

[1, 5, 7, 35, 49, 103, 245, 515, 721, 3605, 5047, 20023, 25235, 100115, 140161, 700805, 981127, 2062369, 4905635, 10311845, 14436583, 72182915, 101056081, 505280405]

約数ペア:

[(1, 505280405), (5, 101056081), (7, 72182915), (35, 14436583), (49, 10311845), (103, 4905635), (245, 2062369), (515, 981127), (721, 700805), (3605, 140161), (5047, 100115), (20023, 25235)]