19976418

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:133

約数の個数: 144

約数和(自身を含む): 57620160

約数和(自身を除く): 37643742

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 29, 33, 42, 49, 58, 63, 66, 71, 77, 87, 98, 99, 126, 142, 147, 154, 174, 198, 203, 213, 231, 261, 294, 319, 406, 426, 441, 462, 497, 522, 539, 609, 638, 639, 693, 781, 882, 957, 994, 1078, 1218, 1278, 1386, 1421, 1491, 1562, 1617, 1827, 1914, 2059, 2233, 2343, 2842, 2871, 2982, 3234, 3479, 3654, 4118, 4263, 4466, 4473, 4686, 4851, 5467, 5742, 6177, 6699, 6958, 7029, 8526, 8946, 9702, 10437, 10934, 12354, 12789, 13398, 14058, 14413, 15631, 16401, 18531, 20097, 20874, 22649, 25578, 28826, 31262, 31311, 32802, 37062, 38269, 40194, 43239, 45298, 46893, 49203, 62622, 67947, 76538, 86478, 93786, 98406, 100891, 114807, 129717, 135894, 140679, 158543, 201782, 203841, 229614, 259434, 281358, 302673, 317086, 344421, 407682, 475629, 605346, 688842, 908019, 951258, 1109801, 1426887, 1816038, 2219602, 2853774, 3329403, 6658806, 9988209, 19976418]

約数ペア:

[(1, 19976418), (2, 9988209), (3, 6658806), (6, 3329403), (7, 2853774), (9, 2219602), (11, 1816038), (14, 1426887), (18, 1109801), (21, 951258), (22, 908019), (29, 688842), (33, 605346), (42, 475629), (49, 407682), (58, 344421), (63, 317086), (66, 302673), (71, 281358), (77, 259434), (87, 229614), (98, 203841), (99, 201782), (126, 158543), (142, 140679), (147, 135894), (154, 129717), (174, 114807), (198, 100891), (203, 98406), (213, 93786), (231, 86478), (261, 76538), (294, 67947), (319, 62622), (406, 49203), (426, 46893), (441, 45298), (462, 43239), (497, 40194), (522, 38269), (539, 37062), (609, 32802), (638, 31311), (639, 31262), (693, 28826), (781, 25578), (882, 22649), (957, 20874), (994, 20097), (1078, 18531), (1218, 16401), (1278, 15631), (1386, 14413), (1421, 14058), (1491, 13398), (1562, 12789), (1617, 12354), (1827, 10934), (1914, 10437), (2059, 9702), (2233, 8946), (2343, 8526), (2842, 7029), (2871, 6958), (2982, 6699), (3234, 6177), (3479, 5742), (3654, 5467), (4118, 4851), (4263, 4686), (4466, 4473)]