20909945

素因数分解:

$5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{2039}}^1$

素因数の和:2344

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 7878535

約数列:

[1, 5, 7, 35, 293, 1465, 2039, 2051, 10195, 10255, 14273, 71365, 597427, 2987135, 4181989, 20909945]

約数ペア:

[(1, 20909945), (5, 4181989), (7, 2987135), (35, 597427), (293, 71365), (1465, 14273), (2039, 10255), (2051, 10195)]