20682405

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6661}}^1$

素因数の和:6698

約数の個数: 32

約数和(自身を含む): 38373120

約数和(自身を除く): 17690715

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6661, 19983, 33305, 59949, 99915, 153203, 179847, 299745, 459609, 766015, 899235, 1378827, 2298045, 4136481, 6894135, 20682405]

約数ペア:

[(1, 20682405), (3, 6894135), (5, 4136481), (9, 2298045), (15, 1378827), (23, 899235), (27, 766015), (45, 459609), (69, 299745), (115, 179847), (135, 153203), (207, 99915), (345, 59949), (621, 33305), (1035, 19983), (3105, 6661)]