20938255

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 27669600

約数和(自身を除く): 6731345

約数列:

[1, 5, 13, 65, 71, 169, 349, 355, 845, 923, 1745, 4537, 4615, 11999, 22685, 24779, 58981, 59995, 123895, 294905, 322127, 1610635, 4187651, 20938255]

約数ペア:

[(1, 20938255), (5, 4187651), (13, 1610635), (65, 322127), (71, 294905), (169, 123895), (349, 59995), (355, 58981), (845, 24779), (923, 22685), (1745, 11999), (4537, 4615)]