20804867725

素因数分解:

$5^2\times {\mathrm{1109}}^1\times {\mathrm{750401}}^1$

素因数の和:751520

約数の個数: 12

約数和(自身を含む): 25821332820

約数和(自身を除く): 5016465095

約数列:

[1, 5, 25, 1109, 5545, 27725, 750401, 3752005, 18760025, 832194709, 4160973545, 20804867725]

約数ペア:

[(1, 20804867725), (5, 4160973545), (25, 832194709), (1109, 18760025), (5545, 3752005), (27725, 750401)]