20475945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65003}}^1$

素因数の和:65021

約数の個数: 24

約数和(自身を含む): 40562496

約数和(自身を除く): 20086551

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65003, 195009, 325015, 455021, 585027, 975045, 1365063, 2275105, 2925135, 4095189, 6825315, 20475945]

約数ペア:

[(1, 20475945), (3, 6825315), (5, 4095189), (7, 2925135), (9, 2275105), (15, 1365063), (21, 975045), (35, 585027), (45, 455021), (63, 325015), (105, 195009), (315, 65003)]