20862709

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{739}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 24745600

約数和(自身を除く): 3882891

約数列:

[1, 7, 37, 109, 259, 739, 763, 4033, 5173, 27343, 28231, 80551, 191401, 563857, 2980387, 20862709]

約数ペア:

[(1, 20862709), (7, 2980387), (37, 563857), (109, 191401), (259, 80551), (739, 28231), (763, 27343), (4033, 5173)]