161531480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 414305280

約数和(自身を除く): 252773800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 73, 88, 94, 107, 110, 146, 188, 214, 220, 235, 292, 365, 376, 428, 440, 470, 517, 535, 584, 730, 803, 856, 940, 1034, 1070, 1177, 1460, 1606, 1880, 2068, 2140, 2354, 2585, 2920, 3212, 3431, 4015, 4136, 4280, 4708, 5029, 5170, 5885, 6424, 6862, 7811, 8030, 9416, 10058, 10340, 11770, 13724, 15622, 16060, 17155, 20116, 20680, 23540, 25145, 27448, 31244, 32120, 34310, 37741, 39055, 40232, 47080, 50290, 55319, 62488, 68620, 75482, 78110, 85921, 100580, 110638, 137240, 150964, 156220, 171842, 188705, 201160, 221276, 276595, 301928, 312440, 343684, 367117, 377410, 429605, 442552, 553190, 687368, 734234, 754820, 859210, 1106380, 1468468, 1509640, 1718420, 1835585, 2212760, 2936936, 3436840, 3671170, 4038287, 7342340, 8076574, 14684680, 16153148, 20191435, 32306296, 40382870, 80765740, 161531480]

約数ペア:

[(1, 161531480), (2, 80765740), (4, 40382870), (5, 32306296), (8, 20191435), (10, 16153148), (11, 14684680), (20, 8076574), (22, 7342340), (40, 4038287), (44, 3671170), (47, 3436840), (55, 2936936), (73, 2212760), (88, 1835585), (94, 1718420), (107, 1509640), (110, 1468468), (146, 1106380), (188, 859210), (214, 754820), (220, 734234), (235, 687368), (292, 553190), (365, 442552), (376, 429605), (428, 377410), (440, 367117), (470, 343684), (517, 312440), (535, 301928), (584, 276595), (730, 221276), (803, 201160), (856, 188705), (940, 171842), (1034, 156220), (1070, 150964), (1177, 137240), (1460, 110638), (1606, 100580), (1880, 85921), (2068, 78110), (2140, 75482), (2354, 68620), (2585, 62488), (2920, 55319), (3212, 50290), (3431, 47080), (4015, 40232), (4136, 39055), (4280, 37741), (4708, 34310), (5029, 32120), (5170, 31244), (5885, 27448), (6424, 25145), (6862, 23540), (7811, 20680), (8030, 20116), (9416, 17155), (10058, 16060), (10340, 15622), (11770, 13724)]