388678840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{199}}^1$

素因数の和:437

約数の個数: 128

約数和(自身を含む): 1005696000

約数和(自身を除く): 617017160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 193, 199, 220, 230, 253, 386, 398, 440, 460, 506, 772, 796, 920, 965, 995, 1012, 1265, 1544, 1592, 1930, 1990, 2024, 2123, 2189, 2530, 3860, 3980, 4246, 4378, 4439, 4577, 5060, 7720, 7960, 8492, 8756, 8878, 9154, 10120, 10615, 10945, 16984, 17512, 17756, 18308, 21230, 21890, 22195, 22885, 35512, 36616, 38407, 42460, 43780, 44390, 45770, 48829, 50347, 76814, 84920, 87560, 88780, 91540, 97658, 100694, 153628, 177560, 183080, 192035, 195316, 201388, 244145, 251735, 307256, 384070, 390632, 402776, 422477, 488290, 503470, 768140, 844954, 883361, 976580, 1006940, 1536280, 1689908, 1766722, 1953160, 2013880, 2112385, 3379816, 3533444, 4224770, 4416805, 7066888, 8449540, 8833610, 9716971, 16899080, 17667220, 19433942, 35334440, 38867884, 48584855, 77735768, 97169710, 194339420, 388678840]

約数ペア:

[(1, 388678840), (2, 194339420), (4, 97169710), (5, 77735768), (8, 48584855), (10, 38867884), (11, 35334440), (20, 19433942), (22, 17667220), (23, 16899080), (40, 9716971), (44, 8833610), (46, 8449540), (55, 7066888), (88, 4416805), (92, 4224770), (110, 3533444), (115, 3379816), (184, 2112385), (193, 2013880), (199, 1953160), (220, 1766722), (230, 1689908), (253, 1536280), (386, 1006940), (398, 976580), (440, 883361), (460, 844954), (506, 768140), (772, 503470), (796, 488290), (920, 422477), (965, 402776), (995, 390632), (1012, 384070), (1265, 307256), (1544, 251735), (1592, 244145), (1930, 201388), (1990, 195316), (2024, 192035), (2123, 183080), (2189, 177560), (2530, 153628), (3860, 100694), (3980, 97658), (4246, 91540), (4378, 88780), (4439, 87560), (4577, 84920), (5060, 76814), (7720, 50347), (7960, 48829), (8492, 45770), (8756, 44390), (8878, 43780), (9154, 42460), (10120, 38407), (10615, 36616), (10945, 35512), (16984, 22885), (17512, 22195), (17756, 21890), (18308, 21230)]