20553918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2617}}^1$

素因数の和:2657

約数の個数: 64

約数和(自身を含む): 54286848

約数和(自身を除く): 33732930

約数列:

[1, 2, 3, 6, 7, 11, 14, 17, 21, 22, 33, 34, 42, 51, 66, 77, 102, 119, 154, 187, 231, 238, 357, 374, 462, 561, 714, 1122, 1309, 2617, 2618, 3927, 5234, 7851, 7854, 15702, 18319, 28787, 36638, 44489, 54957, 57574, 86361, 88978, 109914, 133467, 172722, 201509, 266934, 311423, 403018, 489379, 604527, 622846, 934269, 978758, 1209054, 1468137, 1868538, 2936274, 3425653, 6851306, 10276959, 20553918]

約数ペア:

[(1, 20553918), (2, 10276959), (3, 6851306), (6, 3425653), (7, 2936274), (11, 1868538), (14, 1468137), (17, 1209054), (21, 978758), (22, 934269), (33, 622846), (34, 604527), (42, 489379), (51, 403018), (66, 311423), (77, 266934), (102, 201509), (119, 172722), (154, 133467), (187, 109914), (231, 88978), (238, 86361), (357, 57574), (374, 54957), (462, 44489), (561, 36638), (714, 28787), (1122, 18319), (1309, 15702), (2617, 7854), (2618, 7851), (3927, 5234)]