19903085

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1759}}^1$

素因数の和:1868

約数の個数: 16

約数和(自身を含む): 25006080

約数和(自身を除く): 5102995

約数列:

[1, 5, 31, 73, 155, 365, 1759, 2263, 8795, 11315, 54529, 128407, 272645, 642035, 3980617, 19903085]

約数ペア:

[(1, 19903085), (5, 3980617), (31, 642035), (73, 272645), (155, 128407), (365, 54529), (1759, 11315), (2263, 8795)]