81661888

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:330

約数の個数: 112

約数和(自身を含む): 205703424

約数和(自身を除く): 124041536

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 73, 77, 88, 112, 146, 154, 176, 224, 227, 292, 308, 352, 448, 454, 511, 584, 616, 704, 803, 908, 1022, 1168, 1232, 1589, 1606, 1816, 2044, 2336, 2464, 2497, 3178, 3212, 3632, 4088, 4672, 4928, 4994, 5621, 6356, 6424, 7264, 8176, 9988, 11242, 12712, 12848, 14528, 16352, 16571, 17479, 19976, 22484, 25424, 25696, 32704, 33142, 34958, 39952, 44968, 50848, 51392, 66284, 69916, 79904, 89936, 101696, 115997, 132568, 139832, 159808, 179872, 182281, 231994, 265136, 279664, 359744, 364562, 463988, 530272, 559328, 729124, 927976, 1060544, 1118656, 1275967, 1458248, 1855952, 2551934, 2916496, 3711904, 5103868, 5832992, 7423808, 10207736, 11665984, 20415472, 40830944, 81661888]

約数ペア:

[(1, 81661888), (2, 40830944), (4, 20415472), (7, 11665984), (8, 10207736), (11, 7423808), (14, 5832992), (16, 5103868), (22, 3711904), (28, 2916496), (32, 2551934), (44, 1855952), (56, 1458248), (64, 1275967), (73, 1118656), (77, 1060544), (88, 927976), (112, 729124), (146, 559328), (154, 530272), (176, 463988), (224, 364562), (227, 359744), (292, 279664), (308, 265136), (352, 231994), (448, 182281), (454, 179872), (511, 159808), (584, 139832), (616, 132568), (704, 115997), (803, 101696), (908, 89936), (1022, 79904), (1168, 69916), (1232, 66284), (1589, 51392), (1606, 50848), (1816, 44968), (2044, 39952), (2336, 34958), (2464, 33142), (2497, 32704), (3178, 25696), (3212, 25424), (3632, 22484), (4088, 19976), (4672, 17479), (4928, 16571), (4994, 16352), (5621, 14528), (6356, 12848), (6424, 12712), (7264, 11242), (8176, 9988)]