20869233

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 35954688

約数和(自身を除く): 15085455

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 121, 129, 191, 231, 301, 363, 473, 573, 847, 903, 1337, 1419, 2101, 2541, 3311, 4011, 5203, 6303, 8213, 9933, 14707, 15609, 23111, 24639, 36421, 44121, 57491, 69333, 90343, 109263, 161777, 172473, 271029, 485331, 632401, 993773, 1897203, 2981319, 6956411, 20869233]

約数ペア:

[(1, 20869233), (3, 6956411), (7, 2981319), (11, 1897203), (21, 993773), (33, 632401), (43, 485331), (77, 271029), (121, 172473), (129, 161777), (191, 109263), (231, 90343), (301, 69333), (363, 57491), (473, 44121), (573, 36421), (847, 24639), (903, 23111), (1337, 15609), (1419, 14707), (2101, 9933), (2541, 8213), (3311, 6303), (4011, 5203)]