18984328

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 41342400

約数和(自身を除く): 22358072

約数列:

[1, 2, 4, 8, 11, 22, 29, 43, 44, 58, 86, 88, 116, 172, 173, 232, 319, 344, 346, 473, 638, 692, 946, 1247, 1276, 1384, 1892, 1903, 2494, 2552, 3784, 3806, 4988, 5017, 7439, 7612, 9976, 10034, 13717, 14878, 15224, 20068, 27434, 29756, 40136, 54868, 55187, 59512, 81829, 109736, 110374, 163658, 215731, 220748, 327316, 431462, 441496, 654632, 862924, 1725848, 2373041, 4746082, 9492164, 18984328]

約数ペア:

[(1, 18984328), (2, 9492164), (4, 4746082), (8, 2373041), (11, 1725848), (22, 862924), (29, 654632), (43, 441496), (44, 431462), (58, 327316), (86, 220748), (88, 215731), (116, 163658), (172, 110374), (173, 109736), (232, 81829), (319, 59512), (344, 55187), (346, 54868), (473, 40136), (638, 29756), (692, 27434), (946, 20068), (1247, 15224), (1276, 14878), (1384, 13717), (1892, 10034), (1903, 9976), (2494, 7612), (2552, 7439), (3784, 5017), (3806, 4988)]