490165256

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:235

約数の個数: 128

約数和(自身を含む): 1131356160

約数和(自身を除く): 641190904

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 47, 56, 61, 71, 86, 94, 122, 142, 172, 188, 244, 284, 301, 329, 344, 376, 427, 488, 497, 568, 602, 658, 854, 994, 1204, 1316, 1708, 1988, 2021, 2408, 2623, 2632, 2867, 3053, 3337, 3416, 3976, 4042, 4331, 5246, 5734, 6106, 6674, 8084, 8662, 10492, 11468, 12212, 13348, 14147, 16168, 17324, 18361, 20069, 20984, 21371, 22936, 23359, 24424, 26696, 28294, 30317, 34648, 36722, 40138, 42742, 46718, 56588, 60634, 73444, 80276, 85484, 93436, 113176, 121268, 123281, 143491, 146888, 160552, 170968, 186233, 186872, 203557, 242536, 246562, 286982, 372466, 407114, 493124, 573964, 744932, 814228, 862967, 986248, 1004437, 1147928, 1303631, 1424899, 1489864, 1628456, 1725934, 2008874, 2607262, 2849798, 3451868, 4017748, 5214524, 5699596, 6903736, 8035496, 8752951, 10429048, 11399192, 17505902, 35011804, 61270657, 70023608, 122541314, 245082628, 490165256]

約数ペア:

[(1, 490165256), (2, 245082628), (4, 122541314), (7, 70023608), (8, 61270657), (14, 35011804), (28, 17505902), (43, 11399192), (47, 10429048), (56, 8752951), (61, 8035496), (71, 6903736), (86, 5699596), (94, 5214524), (122, 4017748), (142, 3451868), (172, 2849798), (188, 2607262), (244, 2008874), (284, 1725934), (301, 1628456), (329, 1489864), (344, 1424899), (376, 1303631), (427, 1147928), (488, 1004437), (497, 986248), (568, 862967), (602, 814228), (658, 744932), (854, 573964), (994, 493124), (1204, 407114), (1316, 372466), (1708, 286982), (1988, 246562), (2021, 242536), (2408, 203557), (2623, 186872), (2632, 186233), (2867, 170968), (3053, 160552), (3337, 146888), (3416, 143491), (3976, 123281), (4042, 121268), (4331, 113176), (5246, 93436), (5734, 85484), (6106, 80276), (6674, 73444), (8084, 60634), (8662, 56588), (10492, 46718), (11468, 42742), (12212, 40138), (13348, 36722), (14147, 34648), (16168, 30317), (17324, 28294), (18361, 26696), (20069, 24424), (20984, 23359), (21371, 22936)]