19987506

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:82

約数の個数: 192

約数和(自身を含む): 61286400

約数和(自身を除く): 41298894

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 19, 21, 22, 23, 27, 33, 38, 42, 46, 54, 57, 63, 66, 69, 77, 99, 114, 121, 126, 133, 138, 154, 161, 171, 189, 198, 207, 209, 231, 242, 253, 266, 297, 322, 342, 363, 378, 399, 414, 418, 437, 462, 483, 506, 513, 594, 621, 627, 693, 726, 759, 798, 847, 874, 966, 1026, 1089, 1197, 1242, 1254, 1311, 1386, 1449, 1463, 1518, 1694, 1771, 1881, 2079, 2178, 2277, 2299, 2394, 2541, 2622, 2783, 2898, 2926, 3059, 3267, 3542, 3591, 3762, 3933, 4158, 4347, 4389, 4554, 4598, 4807, 5082, 5313, 5566, 5643, 6118, 6534, 6831, 6897, 7182, 7623, 7866, 8349, 8694, 8778, 9177, 9614, 10626, 11286, 11799, 13167, 13662, 13794, 14421, 15246, 15939, 16093, 16698, 18354, 19481, 20691, 22869, 23598, 25047, 26334, 27531, 28842, 31878, 32186, 33649, 38962, 39501, 41382, 43263, 45738, 47817, 48279, 50094, 52877, 55062, 58443, 62073, 67298, 75141, 79002, 82593, 86526, 95634, 96558, 100947, 105754, 116886, 124146, 129789, 144837, 150282, 158631, 165186, 175329, 201894, 259578, 289674, 302841, 317262, 350658, 370139, 434511, 475893, 525987, 605682, 740278, 869022, 908523, 951786, 1051974, 1110417, 1427679, 1817046, 2220834, 2855358, 3331251, 6662502, 9993753, 19987506]

約数ペア:

[(1, 19987506), (2, 9993753), (3, 6662502), (6, 3331251), (7, 2855358), (9, 2220834), (11, 1817046), (14, 1427679), (18, 1110417), (19, 1051974), (21, 951786), (22, 908523), (23, 869022), (27, 740278), (33, 605682), (38, 525987), (42, 475893), (46, 434511), (54, 370139), (57, 350658), (63, 317262), (66, 302841), (69, 289674), (77, 259578), (99, 201894), (114, 175329), (121, 165186), (126, 158631), (133, 150282), (138, 144837), (154, 129789), (161, 124146), (171, 116886), (189, 105754), (198, 100947), (207, 96558), (209, 95634), (231, 86526), (242, 82593), (253, 79002), (266, 75141), (297, 67298), (322, 62073), (342, 58443), (363, 55062), (378, 52877), (399, 50094), (414, 48279), (418, 47817), (437, 45738), (462, 43263), (483, 41382), (506, 39501), (513, 38962), (594, 33649), (621, 32186), (627, 31878), (693, 28842), (726, 27531), (759, 26334), (798, 25047), (847, 23598), (874, 22869), (966, 20691), (1026, 19481), (1089, 18354), (1197, 16698), (1242, 16093), (1254, 15939), (1311, 15246), (1386, 14421), (1449, 13794), (1463, 13662), (1518, 13167), (1694, 11799), (1771, 11286), (1881, 10626), (2079, 9614), (2178, 9177), (2277, 8778), (2299, 8694), (2394, 8349), (2541, 7866), (2622, 7623), (2783, 7182), (2898, 6897), (2926, 6831), (3059, 6534), (3267, 6118), (3542, 5643), (3591, 5566), (3762, 5313), (3933, 5082), (4158, 4807), (4347, 4598), (4389, 4554)]