20016304

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^2\times {\mathrm{211}}^1$

素因数の和:255

約数の個数: 90

約数和(自身を含む): 49822332

約数和(自身を除く): 29806028

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 77, 88, 98, 112, 121, 154, 176, 196, 211, 242, 308, 392, 422, 484, 539, 616, 784, 844, 847, 968, 1078, 1232, 1477, 1688, 1694, 1936, 2156, 2321, 2954, 3376, 3388, 4312, 4642, 5908, 5929, 6776, 8624, 9284, 10339, 11816, 11858, 13552, 16247, 18568, 20678, 23632, 23716, 25531, 32494, 37136, 41356, 47432, 51062, 64988, 82712, 94864, 102124, 113729, 129976, 165424, 178717, 204248, 227458, 259952, 357434, 408496, 454916, 714868, 909832, 1251019, 1429736, 1819664, 2502038, 2859472, 5004076, 10008152, 20016304]

約数ペア:

[(1, 20016304), (2, 10008152), (4, 5004076), (7, 2859472), (8, 2502038), (11, 1819664), (14, 1429736), (16, 1251019), (22, 909832), (28, 714868), (44, 454916), (49, 408496), (56, 357434), (77, 259952), (88, 227458), (98, 204248), (112, 178717), (121, 165424), (154, 129976), (176, 113729), (196, 102124), (211, 94864), (242, 82712), (308, 64988), (392, 51062), (422, 47432), (484, 41356), (539, 37136), (616, 32494), (784, 25531), (844, 23716), (847, 23632), (968, 20678), (1078, 18568), (1232, 16247), (1477, 13552), (1688, 11858), (1694, 11816), (1936, 10339), (2156, 9284), (2321, 8624), (2954, 6776), (3376, 5929), (3388, 5908), (4312, 4642)]