128421392

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:372

約数の個数: 80

約数和(自身を含む): 282839040

約数和(自身を除く): 154417648

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 71, 86, 88, 142, 172, 176, 239, 284, 344, 473, 478, 568, 688, 781, 946, 956, 1136, 1562, 1892, 1912, 2629, 3053, 3124, 3784, 3824, 5258, 6106, 6248, 7568, 10277, 10516, 12212, 12496, 16969, 20554, 21032, 24424, 33583, 33938, 41108, 42064, 48848, 67166, 67876, 82216, 113047, 134332, 135752, 164432, 186659, 226094, 268664, 271504, 373318, 452188, 537328, 729667, 746636, 904376, 1459334, 1493272, 1808752, 2918668, 2986544, 5837336, 8026337, 11674672, 16052674, 32105348, 64210696, 128421392]

約数ペア:

[(1, 128421392), (2, 64210696), (4, 32105348), (8, 16052674), (11, 11674672), (16, 8026337), (22, 5837336), (43, 2986544), (44, 2918668), (71, 1808752), (86, 1493272), (88, 1459334), (142, 904376), (172, 746636), (176, 729667), (239, 537328), (284, 452188), (344, 373318), (473, 271504), (478, 268664), (568, 226094), (688, 186659), (781, 164432), (946, 135752), (956, 134332), (1136, 113047), (1562, 82216), (1892, 67876), (1912, 67166), (2629, 48848), (3053, 42064), (3124, 41108), (3784, 33938), (3824, 33583), (5258, 24424), (6106, 21032), (6248, 20554), (7568, 16969), (10277, 12496), (10516, 12212)]