20780395

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5087}}^1$

素因数の和:5154

約数の個数: 16

約数和(自身を含む): 26864640

約数和(自身を除く): 6084245

約数列:

[1, 5, 19, 43, 95, 215, 817, 4085, 5087, 25435, 96653, 218741, 483265, 1093705, 4156079, 20780395]

約数ペア:

[(1, 20780395), (5, 4156079), (19, 1093705), (43, 483265), (95, 218741), (215, 96653), (817, 25435), (4085, 5087)]