20512191616

素因数分解:

$2^7\times 7^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1\times {\mathrm{1483}}^1$

素因数の和:1906

約数の個数: 128

約数和(自身を含む): 47953382400

約数和(自身を除く): 27441190784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 128, 172, 224, 301, 344, 359, 448, 602, 688, 718, 896, 1204, 1376, 1436, 1483, 2408, 2513, 2752, 2872, 2966, 4816, 5026, 5504, 5744, 5932, 9632, 10052, 10381, 11488, 11864, 15437, 19264, 20104, 20762, 22976, 23728, 30874, 38528, 40208, 41524, 45952, 47456, 61748, 63769, 80416, 83048, 94912, 108059, 123496, 127538, 160832, 166096, 189824, 216118, 246992, 255076, 321664, 332192, 432236, 446383, 493984, 510152, 532397, 664384, 864472, 892766, 987968, 1020304, 1064794, 1328768, 1728944, 1785532, 1975936, 2040608, 2129588, 3457888, 3571064, 3726779, 4081216, 4259176, 6915776, 7142128, 7453558, 8162432, 8518352, 13831552, 14284256, 14907116, 17036704, 22893071, 28568512, 29814232, 34073408, 45786142, 57137024, 59628464, 68146816, 91572284, 119256928, 160251497, 183144568, 238513856, 320502994, 366289136, 477027712, 641005988, 732578272, 1282011976, 1465156544, 2564023952, 2930313088, 5128047904, 10256095808, 20512191616]

約数ペア:

[(1, 20512191616), (2, 10256095808), (4, 5128047904), (7, 2930313088), (8, 2564023952), (14, 1465156544), (16, 1282011976), (28, 732578272), (32, 641005988), (43, 477027712), (56, 366289136), (64, 320502994), (86, 238513856), (112, 183144568), (128, 160251497), (172, 119256928), (224, 91572284), (301, 68146816), (344, 59628464), (359, 57137024), (448, 45786142), (602, 34073408), (688, 29814232), (718, 28568512), (896, 22893071), (1204, 17036704), (1376, 14907116), (1436, 14284256), (1483, 13831552), (2408, 8518352), (2513, 8162432), (2752, 7453558), (2872, 7142128), (2966, 6915776), (4816, 4259176), (5026, 4081216), (5504, 3726779), (5744, 3571064), (5932, 3457888), (9632, 2129588), (10052, 2040608), (10381, 1975936), (11488, 1785532), (11864, 1728944), (15437, 1328768), (19264, 1064794), (20104, 1020304), (20762, 987968), (22976, 892766), (23728, 864472), (30874, 664384), (38528, 532397), (40208, 510152), (41524, 493984), (45952, 446383), (47456, 432236), (61748, 332192), (63769, 321664), (80416, 255076), (83048, 246992), (94912, 216118), (108059, 189824), (123496, 166096), (127538, 160832)]