18997986

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{179}}^1$

素因数の和:236

約数の個数: 72

約数和(自身を含む): 46908720

約数和(自身を除く): 27910734

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 49, 57, 98, 114, 133, 147, 179, 266, 294, 358, 361, 399, 537, 722, 798, 931, 1074, 1083, 1253, 1862, 2166, 2506, 2527, 2793, 3401, 3759, 5054, 5586, 6802, 7518, 7581, 8771, 10203, 15162, 17542, 17689, 20406, 23807, 26313, 35378, 47614, 52626, 53067, 64619, 71421, 106134, 129238, 142842, 166649, 193857, 333298, 387714, 452333, 499947, 904666, 999894, 1356999, 2713998, 3166331, 6332662, 9498993, 18997986]

約数ペア:

[(1, 18997986), (2, 9498993), (3, 6332662), (6, 3166331), (7, 2713998), (14, 1356999), (19, 999894), (21, 904666), (38, 499947), (42, 452333), (49, 387714), (57, 333298), (98, 193857), (114, 166649), (133, 142842), (147, 129238), (179, 106134), (266, 71421), (294, 64619), (358, 53067), (361, 52626), (399, 47614), (537, 35378), (722, 26313), (798, 23807), (931, 20406), (1074, 17689), (1083, 17542), (1253, 15162), (1862, 10203), (2166, 8771), (2506, 7581), (2527, 7518), (2793, 6802), (3401, 5586), (3759, 5054)]