189901998

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:415

約数の個数: 144

約数和(自身を含む): 514135440

約数和(自身を除く): 324233442

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 19, 22, 26, 33, 38, 39, 57, 66, 78, 99, 114, 117, 121, 143, 171, 198, 209, 234, 242, 247, 286, 342, 353, 363, 418, 429, 494, 627, 706, 726, 741, 858, 1059, 1089, 1254, 1287, 1482, 1573, 1881, 2118, 2178, 2223, 2299, 2574, 2717, 3146, 3177, 3762, 3883, 4446, 4589, 4598, 4719, 5434, 6354, 6707, 6897, 7766, 8151, 9178, 9438, 11649, 13414, 13767, 13794, 14157, 16302, 20121, 20691, 23298, 24453, 27534, 28314, 29887, 34947, 40242, 41301, 41382, 42713, 48906, 50479, 59774, 60363, 69894, 73777, 82602, 85426, 87191, 89661, 100958, 120726, 128139, 147554, 151437, 174382, 179322, 221331, 256278, 261573, 268983, 302874, 384417, 442662, 454311, 523146, 537966, 555269, 663993, 768834, 784719, 811547, 908622, 959101, 1110538, 1327986, 1569438, 1623094, 1665807, 1918202, 2434641, 2877303, 3331614, 4869282, 4997421, 5754606, 7303923, 8631909, 9994842, 10550111, 14607846, 17263818, 21100222, 31650333, 63300666, 94950999, 189901998]

約数ペア:

[(1, 189901998), (2, 94950999), (3, 63300666), (6, 31650333), (9, 21100222), (11, 17263818), (13, 14607846), (18, 10550111), (19, 9994842), (22, 8631909), (26, 7303923), (33, 5754606), (38, 4997421), (39, 4869282), (57, 3331614), (66, 2877303), (78, 2434641), (99, 1918202), (114, 1665807), (117, 1623094), (121, 1569438), (143, 1327986), (171, 1110538), (198, 959101), (209, 908622), (234, 811547), (242, 784719), (247, 768834), (286, 663993), (342, 555269), (353, 537966), (363, 523146), (418, 454311), (429, 442662), (494, 384417), (627, 302874), (706, 268983), (726, 261573), (741, 256278), (858, 221331), (1059, 179322), (1089, 174382), (1254, 151437), (1287, 147554), (1482, 128139), (1573, 120726), (1881, 100958), (2118, 89661), (2178, 87191), (2223, 85426), (2299, 82602), (2574, 73777), (2717, 69894), (3146, 60363), (3177, 59774), (3762, 50479), (3883, 48906), (4446, 42713), (4589, 41382), (4598, 41301), (4719, 40242), (5434, 34947), (6354, 29887), (6707, 28314), (6897, 27534), (7766, 24453), (8151, 23298), (9178, 20691), (9438, 20121), (11649, 16302), (13414, 14157), (13767, 13794)]