20811224

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7907}}^1$

素因数の和:7967

約数の個数: 32

約数和(自身を含む): 45550080

約数和(自身を除く): 24738856

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 7907, 15814, 31628, 55349, 63256, 110698, 221396, 371629, 442792, 743258, 1486516, 2601403, 2973032, 5202806, 10405612, 20811224]

約数ペア:

[(1, 20811224), (2, 10405612), (4, 5202806), (7, 2973032), (8, 2601403), (14, 1486516), (28, 743258), (47, 442792), (56, 371629), (94, 221396), (188, 110698), (329, 63256), (376, 55349), (658, 31628), (1316, 15814), (2632, 7907)]