19985575

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 25766208

約数和(自身を除く): 5780633

約数列:

[1, 5, 25, 47, 73, 233, 235, 365, 1165, 1175, 1825, 3431, 5825, 10951, 17009, 17155, 54755, 85045, 85775, 273775, 425225, 799423, 3997115, 19985575]

約数ペア:

[(1, 19985575), (5, 3997115), (25, 799423), (47, 425225), (73, 273775), (233, 85775), (235, 85045), (365, 54755), (1165, 17155), (1175, 17009), (1825, 10951), (3431, 5825)]