640828496

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{1499}}^1$

素因数の和:1872

約数の個数: 80

約数和(自身を含む): 1553472000

約数和(自身を除く): 912643504

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 347, 616, 694, 1232, 1388, 1499, 2429, 2776, 2998, 3817, 4858, 5552, 5996, 7634, 9716, 10493, 11992, 15268, 16489, 19432, 20986, 23984, 26719, 30536, 32978, 38864, 41972, 53438, 61072, 65956, 83944, 106876, 115423, 131912, 167888, 213752, 230846, 263824, 427504, 461692, 520153, 923384, 1040306, 1846768, 2080612, 3641071, 4161224, 5721683, 7282142, 8322448, 11443366, 14564284, 22886732, 29128568, 40051781, 45773464, 58257136, 80103562, 91546928, 160207124, 320414248, 640828496]

約数ペア:

[(1, 640828496), (2, 320414248), (4, 160207124), (7, 91546928), (8, 80103562), (11, 58257136), (14, 45773464), (16, 40051781), (22, 29128568), (28, 22886732), (44, 14564284), (56, 11443366), (77, 8322448), (88, 7282142), (112, 5721683), (154, 4161224), (176, 3641071), (308, 2080612), (347, 1846768), (616, 1040306), (694, 923384), (1232, 520153), (1388, 461692), (1499, 427504), (2429, 263824), (2776, 230846), (2998, 213752), (3817, 167888), (4858, 131912), (5552, 115423), (5996, 106876), (7634, 83944), (9716, 65956), (10493, 61072), (11992, 53438), (15268, 41972), (16489, 38864), (19432, 32978), (20986, 30536), (23984, 26719)]