20518784

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 51408000

約数和(自身を除く): 30889216

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 32, 38, 44, 52, 59, 64, 76, 88, 104, 118, 128, 143, 152, 176, 208, 209, 236, 247, 286, 304, 352, 416, 418, 472, 494, 572, 608, 649, 704, 767, 832, 836, 944, 988, 1121, 1144, 1216, 1298, 1408, 1534, 1664, 1672, 1888, 1976, 2242, 2288, 2432, 2596, 2717, 3068, 3344, 3776, 3952, 4484, 4576, 5192, 5434, 6136, 6688, 7552, 7904, 8437, 8968, 9152, 10384, 10868, 12272, 12331, 13376, 14573, 15808, 16874, 17936, 18304, 20768, 21736, 24544, 24662, 26752, 29146, 31616, 33748, 35872, 41536, 43472, 49088, 49324, 58292, 67496, 71744, 83072, 86944, 98176, 98648, 116584, 134992, 143488, 160303, 173888, 197296, 233168, 269984, 320606, 347776, 394592, 466336, 539968, 641212, 789184, 932672, 1079936, 1282424, 1578368, 1865344, 2564848, 5129696, 10259392, 20518784]

約数ペア:

[(1, 20518784), (2, 10259392), (4, 5129696), (8, 2564848), (11, 1865344), (13, 1578368), (16, 1282424), (19, 1079936), (22, 932672), (26, 789184), (32, 641212), (38, 539968), (44, 466336), (52, 394592), (59, 347776), (64, 320606), (76, 269984), (88, 233168), (104, 197296), (118, 173888), (128, 160303), (143, 143488), (152, 134992), (176, 116584), (208, 98648), (209, 98176), (236, 86944), (247, 83072), (286, 71744), (304, 67496), (352, 58292), (416, 49324), (418, 49088), (472, 43472), (494, 41536), (572, 35872), (608, 33748), (649, 31616), (704, 29146), (767, 26752), (832, 24662), (836, 24544), (944, 21736), (988, 20768), (1121, 18304), (1144, 17936), (1216, 16874), (1298, 15808), (1408, 14573), (1534, 13376), (1664, 12331), (1672, 12272), (1888, 10868), (1976, 10384), (2242, 9152), (2288, 8968), (2432, 8437), (2596, 7904), (2717, 7552), (3068, 6688), (3344, 6136), (3776, 5434), (3952, 5192), (4484, 4576)]