19997406

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:506

約数の個数: 96

約数和(自身を含む): 54014688

約数和(自身を除く): 34017282

約数列:

[1, 2, 3, 6, 9, 11, 13, 17, 18, 22, 26, 33, 34, 39, 51, 66, 78, 99, 102, 117, 143, 153, 187, 198, 221, 234, 286, 306, 374, 429, 442, 457, 561, 663, 858, 914, 1122, 1287, 1326, 1371, 1683, 1989, 2431, 2574, 2742, 3366, 3978, 4113, 4862, 5027, 5941, 7293, 7769, 8226, 10054, 11882, 14586, 15081, 15538, 17823, 21879, 23307, 30162, 35646, 43758, 45243, 46614, 53469, 65351, 69921, 85459, 90486, 100997, 106938, 130702, 139842, 170918, 196053, 201994, 256377, 302991, 392106, 512754, 588159, 605982, 769131, 908973, 1110967, 1176318, 1538262, 1817946, 2221934, 3332901, 6665802, 9998703, 19997406]

約数ペア:

[(1, 19997406), (2, 9998703), (3, 6665802), (6, 3332901), (9, 2221934), (11, 1817946), (13, 1538262), (17, 1176318), (18, 1110967), (22, 908973), (26, 769131), (33, 605982), (34, 588159), (39, 512754), (51, 392106), (66, 302991), (78, 256377), (99, 201994), (102, 196053), (117, 170918), (143, 139842), (153, 130702), (187, 106938), (198, 100997), (221, 90486), (234, 85459), (286, 69921), (306, 65351), (374, 53469), (429, 46614), (442, 45243), (457, 43758), (561, 35646), (663, 30162), (858, 23307), (914, 21879), (1122, 17823), (1287, 15538), (1326, 15081), (1371, 14586), (1683, 11882), (1989, 10054), (2431, 8226), (2574, 7769), (2742, 7293), (3366, 5941), (3978, 5027), (4113, 4862)]