20788006

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:268

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 12919514

約数列:

[1, 2, 37, 43, 47, 74, 86, 94, 139, 278, 1591, 1739, 2021, 3182, 3478, 4042, 5143, 5977, 6533, 10286, 11954, 13066, 74777, 149554, 221149, 241721, 280919, 442298, 483442, 561838, 10394003, 20788006]

約数ペア:

[(1, 20788006), (2, 10394003), (37, 561838), (43, 483442), (47, 442298), (74, 280919), (86, 241721), (94, 221149), (139, 149554), (278, 74777), (1591, 13066), (1739, 11954), (2021, 10286), (3182, 6533), (3478, 5977), (4042, 5143)]