21136136

素因数分解:

$2^3\times 7^1\times {\mathrm{571}}^1\times {\mathrm{661}}^1$

素因数の和:1245

約数の個数: 32

約数和(自身を含む): 45439680

約数和(自身を除く): 24303544

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 571, 661, 1142, 1322, 2284, 2644, 3997, 4568, 4627, 5288, 7994, 9254, 15988, 18508, 31976, 37016, 377431, 754862, 1509724, 2642017, 3019448, 5284034, 10568068, 21136136]

約数ペア:

[(1, 21136136), (2, 10568068), (4, 5284034), (7, 3019448), (8, 2642017), (14, 1509724), (28, 754862), (56, 377431), (571, 37016), (661, 31976), (1142, 18508), (1322, 15988), (2284, 9254), (2644, 7994), (3997, 5288), (4568, 4627)]