19979982

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:198

約数の個数: 96

約数和(自身を含む): 51217920

約数和(自身を除く): 31237938

約数列:

[1, 2, 3, 6, 9, 11, 18, 19, 22, 33, 38, 47, 57, 66, 94, 99, 113, 114, 141, 171, 198, 209, 226, 282, 339, 342, 418, 423, 517, 627, 678, 846, 893, 1017, 1034, 1243, 1254, 1551, 1786, 1881, 2034, 2147, 2486, 2679, 3102, 3729, 3762, 4294, 4653, 5311, 5358, 6441, 7458, 8037, 9306, 9823, 10622, 11187, 12882, 15933, 16074, 19323, 19646, 22374, 23617, 29469, 31866, 38646, 47234, 47799, 58421, 58938, 70851, 88407, 95598, 100909, 116842, 141702, 175263, 176814, 201818, 212553, 302727, 350526, 425106, 525789, 605454, 908181, 1051578, 1109999, 1816362, 2219998, 3329997, 6659994, 9989991, 19979982]

約数ペア:

[(1, 19979982), (2, 9989991), (3, 6659994), (6, 3329997), (9, 2219998), (11, 1816362), (18, 1109999), (19, 1051578), (22, 908181), (33, 605454), (38, 525789), (47, 425106), (57, 350526), (66, 302727), (94, 212553), (99, 201818), (113, 176814), (114, 175263), (141, 141702), (171, 116842), (198, 100909), (209, 95598), (226, 88407), (282, 70851), (339, 58938), (342, 58421), (418, 47799), (423, 47234), (517, 38646), (627, 31866), (678, 29469), (846, 23617), (893, 22374), (1017, 19646), (1034, 19323), (1243, 16074), (1254, 15933), (1551, 12882), (1786, 11187), (1881, 10622), (2034, 9823), (2147, 9306), (2486, 8037), (2679, 7458), (3102, 6441), (3729, 5358), (3762, 5311), (4294, 4653)]