18650828

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 39137280

約数和(自身を除く): 20486452

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 103, 116, 203, 206, 223, 406, 412, 446, 721, 812, 892, 1442, 1561, 2884, 2987, 3122, 5974, 6244, 6467, 11948, 12934, 20909, 22969, 25868, 41818, 45269, 45938, 83636, 90538, 91876, 160783, 181076, 321566, 643132, 666101, 1332202, 2664404, 4662707, 9325414, 18650828]

約数ペア:

[(1, 18650828), (2, 9325414), (4, 4662707), (7, 2664404), (14, 1332202), (28, 666101), (29, 643132), (58, 321566), (103, 181076), (116, 160783), (203, 91876), (206, 90538), (223, 83636), (406, 45938), (412, 45269), (446, 41818), (721, 25868), (812, 22969), (892, 20909), (1442, 12934), (1561, 11948), (2884, 6467), (2987, 6244), (3122, 5974)]