321251840

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:247

約数の個数: 240

約数和(自身を含む): 969828552

約数和(自身を除く): 648576712

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 112, 128, 130, 140, 160, 182, 196, 197, 208, 224, 245, 256, 260, 280, 320, 364, 392, 394, 416, 448, 455, 490, 512, 520, 560, 637, 640, 728, 784, 788, 832, 896, 910, 980, 985, 1040, 1120, 1274, 1280, 1379, 1456, 1568, 1576, 1664, 1792, 1820, 1960, 1970, 2080, 2240, 2548, 2560, 2561, 2758, 2912, 3136, 3152, 3185, 3328, 3584, 3640, 3920, 3940, 4160, 4480, 5096, 5122, 5516, 5824, 6272, 6304, 6370, 6656, 6895, 7280, 7840, 7880, 8320, 8960, 9653, 10192, 10244, 11032, 11648, 12544, 12608, 12740, 12805, 13790, 14560, 15680, 15760, 16640, 17920, 17927, 19306, 20384, 20488, 22064, 23296, 25088, 25216, 25480, 25610, 27580, 29120, 31360, 31520, 33280, 35854, 38612, 40768, 40976, 44128, 46592, 48265, 50432, 50960, 51220, 55160, 58240, 62720, 63040, 71708, 77224, 81536, 81952, 88256, 89635, 96530, 100864, 101920, 102440, 110320, 116480, 125440, 125489, 126080, 143416, 154448, 163072, 163904, 176512, 179270, 193060, 203840, 204880, 220640, 232960, 250978, 252160, 286832, 308896, 326144, 327808, 353024, 358540, 386120, 407680, 409760, 441280, 501956, 504320, 573664, 617792, 627445, 655616, 706048, 717080, 772240, 815360, 819520, 882560, 1003912, 1147328, 1235584, 1254890, 1311232, 1434160, 1544480, 1630720, 1639040, 1765120, 2007824, 2294656, 2471168, 2509780, 2868320, 3088960, 3278080, 3530240, 4015648, 4589312, 4942336, 5019560, 5736640, 6177920, 6556160, 8031296, 9178624, 10039120, 11473280, 12355840, 16062592, 20078240, 22946560, 24711680, 32125184, 40156480, 45893120, 64250368, 80312960, 160625920, 321251840]

約数ペア:

[(1, 321251840), (2, 160625920), (4, 80312960), (5, 64250368), (7, 45893120), (8, 40156480), (10, 32125184), (13, 24711680), (14, 22946560), (16, 20078240), (20, 16062592), (26, 12355840), (28, 11473280), (32, 10039120), (35, 9178624), (40, 8031296), (49, 6556160), (52, 6177920), (56, 5736640), (64, 5019560), (65, 4942336), (70, 4589312), (80, 4015648), (91, 3530240), (98, 3278080), (104, 3088960), (112, 2868320), (128, 2509780), (130, 2471168), (140, 2294656), (160, 2007824), (182, 1765120), (196, 1639040), (197, 1630720), (208, 1544480), (224, 1434160), (245, 1311232), (256, 1254890), (260, 1235584), (280, 1147328), (320, 1003912), (364, 882560), (392, 819520), (394, 815360), (416, 772240), (448, 717080), (455, 706048), (490, 655616), (512, 627445), (520, 617792), (560, 573664), (637, 504320), (640, 501956), (728, 441280), (784, 409760), (788, 407680), (832, 386120), (896, 358540), (910, 353024), (980, 327808), (985, 326144), (1040, 308896), (1120, 286832), (1274, 252160), (1280, 250978), (1379, 232960), (1456, 220640), (1568, 204880), (1576, 203840), (1664, 193060), (1792, 179270), (1820, 176512), (1960, 163904), (1970, 163072), (2080, 154448), (2240, 143416), (2548, 126080), (2560, 125489), (2561, 125440), (2758, 116480), (2912, 110320), (3136, 102440), (3152, 101920), (3185, 100864), (3328, 96530), (3584, 89635), (3640, 88256), (3920, 81952), (3940, 81536), (4160, 77224), (4480, 71708), (5096, 63040), (5122, 62720), (5516, 58240), (5824, 55160), (6272, 51220), (6304, 50960), (6370, 50432), (6656, 48265), (6895, 46592), (7280, 44128), (7840, 40976), (7880, 40768), (8320, 38612), (8960, 35854), (9653, 33280), (10192, 31520), (10244, 31360), (11032, 29120), (11648, 27580), (12544, 25610), (12608, 25480), (12740, 25216), (12805, 25088), (13790, 23296), (14560, 22064), (15680, 20488), (15760, 20384), (16640, 19306), (17920, 17927)]