1640852480

素因数分解:

$2^{10}\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:354

約数の個数: 176

約数和(自身を含む): 4182757920

約数和(自身を除く): 2541905440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 43, 58, 64, 80, 86, 116, 128, 145, 160, 172, 215, 232, 256, 257, 290, 320, 344, 430, 464, 512, 514, 580, 640, 688, 860, 928, 1024, 1028, 1160, 1247, 1280, 1285, 1376, 1720, 1856, 2056, 2320, 2494, 2560, 2570, 2752, 3440, 3712, 4112, 4640, 4988, 5120, 5140, 5504, 6235, 6880, 7424, 7453, 8224, 9280, 9976, 10280, 11008, 11051, 12470, 13760, 14848, 14906, 16448, 18560, 19952, 20560, 22016, 22102, 24940, 27520, 29696, 29812, 32896, 37120, 37265, 39904, 41120, 44032, 44204, 49880, 55040, 55255, 59624, 65792, 74240, 74530, 79808, 82240, 88408, 99760, 110080, 110510, 119248, 131584, 148480, 149060, 159616, 164480, 176816, 199520, 220160, 221020, 238496, 263168, 298120, 319232, 320479, 328960, 353632, 399040, 442040, 476992, 596240, 638464, 640958, 657920, 707264, 798080, 884080, 953984, 1192480, 1276928, 1281916, 1315840, 1414528, 1596160, 1602395, 1768160, 1907968, 2384960, 2563832, 2829056, 3192320, 3204790, 3536320, 3815936, 4769920, 5127664, 5658112, 6384640, 6409580, 7072640, 7631872, 9539840, 10255328, 11316224, 12819160, 14145280, 19079680, 20510656, 25638320, 28290560, 38159360, 41021312, 51276640, 56581120, 82042624, 102553280, 164085248, 205106560, 328170496, 410213120, 820426240, 1640852480]

約数ペア:

[(1, 1640852480), (2, 820426240), (4, 410213120), (5, 328170496), (8, 205106560), (10, 164085248), (16, 102553280), (20, 82042624), (29, 56581120), (32, 51276640), (40, 41021312), (43, 38159360), (58, 28290560), (64, 25638320), (80, 20510656), (86, 19079680), (116, 14145280), (128, 12819160), (145, 11316224), (160, 10255328), (172, 9539840), (215, 7631872), (232, 7072640), (256, 6409580), (257, 6384640), (290, 5658112), (320, 5127664), (344, 4769920), (430, 3815936), (464, 3536320), (512, 3204790), (514, 3192320), (580, 2829056), (640, 2563832), (688, 2384960), (860, 1907968), (928, 1768160), (1024, 1602395), (1028, 1596160), (1160, 1414528), (1247, 1315840), (1280, 1281916), (1285, 1276928), (1376, 1192480), (1720, 953984), (1856, 884080), (2056, 798080), (2320, 707264), (2494, 657920), (2560, 640958), (2570, 638464), (2752, 596240), (3440, 476992), (3712, 442040), (4112, 399040), (4640, 353632), (4988, 328960), (5120, 320479), (5140, 319232), (5504, 298120), (6235, 263168), (6880, 238496), (7424, 221020), (7453, 220160), (8224, 199520), (9280, 176816), (9976, 164480), (10280, 159616), (11008, 149060), (11051, 148480), (12470, 131584), (13760, 119248), (14848, 110510), (14906, 110080), (16448, 99760), (18560, 88408), (19952, 82240), (20560, 79808), (22016, 74530), (22102, 74240), (24940, 65792), (27520, 59624), (29696, 55255), (29812, 55040), (32896, 49880), (37120, 44204), (37265, 44032), (39904, 41120)]