20587424

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 72

約数和(自身を含む): 48095460

約数和(自身を除く): 27508036

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 352, 409, 416, 484, 572, 818, 968, 1144, 1573, 1636, 1936, 2288, 3146, 3272, 3872, 4499, 4576, 5317, 6292, 6544, 8998, 10634, 12584, 13088, 17996, 21268, 25168, 35992, 42536, 49489, 50336, 58487, 71984, 85072, 98978, 116974, 143968, 170144, 197956, 233948, 395912, 467896, 643357, 791824, 935792, 1286714, 1583648, 1871584, 2573428, 5146856, 10293712, 20587424]

約数ペア:

[(1, 20587424), (2, 10293712), (4, 5146856), (8, 2573428), (11, 1871584), (13, 1583648), (16, 1286714), (22, 935792), (26, 791824), (32, 643357), (44, 467896), (52, 395912), (88, 233948), (104, 197956), (121, 170144), (143, 143968), (176, 116974), (208, 98978), (242, 85072), (286, 71984), (352, 58487), (409, 50336), (416, 49489), (484, 42536), (572, 35992), (818, 25168), (968, 21268), (1144, 17996), (1573, 13088), (1636, 12584), (1936, 10634), (2288, 8998), (3146, 6544), (3272, 6292), (3872, 5317), (4499, 4576)]