21275165

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 26083200

約数和(自身を除く): 4808035

約数列:

[1, 5, 103, 109, 379, 515, 545, 1895, 11227, 39037, 41311, 56135, 195185, 206555, 4255033, 21275165]

約数ペア:

[(1, 21275165), (5, 4255033), (103, 206555), (109, 195185), (379, 56135), (515, 41311), (545, 39037), (1895, 11227)]