645648640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:305

約数の個数: 288

約数和(自身を含む): 1994420736

約数和(自身を除く): 1348772096

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 23, 26, 28, 32, 35, 40, 46, 52, 56, 64, 65, 70, 80, 91, 92, 104, 112, 115, 128, 130, 140, 160, 161, 182, 184, 208, 224, 230, 241, 256, 260, 280, 299, 320, 322, 364, 368, 416, 448, 455, 460, 482, 520, 560, 598, 640, 644, 728, 736, 805, 832, 896, 910, 920, 964, 1040, 1120, 1196, 1205, 1280, 1288, 1456, 1472, 1495, 1610, 1664, 1687, 1792, 1820, 1840, 1928, 2080, 2093, 2240, 2392, 2410, 2576, 2912, 2944, 2990, 3133, 3220, 3328, 3374, 3640, 3680, 3856, 4160, 4186, 4480, 4784, 4820, 5152, 5543, 5824, 5888, 5980, 6266, 6440, 6748, 7280, 7360, 7712, 8320, 8372, 8435, 8960, 9568, 9640, 10304, 10465, 11086, 11648, 11960, 12532, 12880, 13496, 14560, 14720, 15424, 15665, 16640, 16744, 16870, 19136, 19280, 20608, 20930, 21931, 22172, 23296, 23920, 25064, 25760, 26992, 27715, 29120, 29440, 30848, 31330, 33488, 33740, 38272, 38560, 38801, 41216, 41860, 43862, 44344, 47840, 50128, 51520, 53984, 55430, 58240, 61696, 62660, 66976, 67480, 72059, 76544, 77120, 77602, 83720, 87724, 88688, 95680, 100256, 103040, 107968, 109655, 110860, 116480, 125320, 133952, 134960, 144118, 154240, 155204, 167440, 175448, 177376, 191360, 194005, 200512, 206080, 215936, 219310, 221720, 250640, 267904, 269920, 288236, 308480, 310408, 334880, 350896, 354752, 360295, 382720, 388010, 401024, 431872, 438620, 443440, 501280, 504413, 535808, 539840, 576472, 620816, 669760, 701792, 709504, 720590, 776020, 802048, 877240, 886880, 1002560, 1008826, 1079680, 1152944, 1241632, 1339520, 1403584, 1419008, 1441180, 1552040, 1754480, 1773760, 2005120, 2017652, 2159360, 2305888, 2483264, 2522065, 2679040, 2807168, 2882360, 3104080, 3508960, 3547520, 4010240, 4035304, 4611776, 4966528, 5044130, 5614336, 5764720, 6208160, 7017920, 7095040, 8070608, 9223552, 9933056, 10088260, 11529440, 12416320, 14035840, 16141216, 18447104, 20176520, 23058880, 24832640, 28071680, 32282432, 40353040, 46117760, 49665280, 64564864, 80706080, 92235520, 129129728, 161412160, 322824320, 645648640]

約数ペア:

[(1, 645648640), (2, 322824320), (4, 161412160), (5, 129129728), (7, 92235520), (8, 80706080), (10, 64564864), (13, 49665280), (14, 46117760), (16, 40353040), (20, 32282432), (23, 28071680), (26, 24832640), (28, 23058880), (32, 20176520), (35, 18447104), (40, 16141216), (46, 14035840), (52, 12416320), (56, 11529440), (64, 10088260), (65, 9933056), (70, 9223552), (80, 8070608), (91, 7095040), (92, 7017920), (104, 6208160), (112, 5764720), (115, 5614336), (128, 5044130), (130, 4966528), (140, 4611776), (160, 4035304), (161, 4010240), (182, 3547520), (184, 3508960), (208, 3104080), (224, 2882360), (230, 2807168), (241, 2679040), (256, 2522065), (260, 2483264), (280, 2305888), (299, 2159360), (320, 2017652), (322, 2005120), (364, 1773760), (368, 1754480), (416, 1552040), (448, 1441180), (455, 1419008), (460, 1403584), (482, 1339520), (520, 1241632), (560, 1152944), (598, 1079680), (640, 1008826), (644, 1002560), (728, 886880), (736, 877240), (805, 802048), (832, 776020), (896, 720590), (910, 709504), (920, 701792), (964, 669760), (1040, 620816), (1120, 576472), (1196, 539840), (1205, 535808), (1280, 504413), (1288, 501280), (1456, 443440), (1472, 438620), (1495, 431872), (1610, 401024), (1664, 388010), (1687, 382720), (1792, 360295), (1820, 354752), (1840, 350896), (1928, 334880), (2080, 310408), (2093, 308480), (2240, 288236), (2392, 269920), (2410, 267904), (2576, 250640), (2912, 221720), (2944, 219310), (2990, 215936), (3133, 206080), (3220, 200512), (3328, 194005), (3374, 191360), (3640, 177376), (3680, 175448), (3856, 167440), (4160, 155204), (4186, 154240), (4480, 144118), (4784, 134960), (4820, 133952), (5152, 125320), (5543, 116480), (5824, 110860), (5888, 109655), (5980, 107968), (6266, 103040), (6440, 100256), (6748, 95680), (7280, 88688), (7360, 87724), (7712, 83720), (8320, 77602), (8372, 77120), (8435, 76544), (8960, 72059), (9568, 67480), (9640, 66976), (10304, 62660), (10465, 61696), (11086, 58240), (11648, 55430), (11960, 53984), (12532, 51520), (12880, 50128), (13496, 47840), (14560, 44344), (14720, 43862), (15424, 41860), (15665, 41216), (16640, 38801), (16744, 38560), (16870, 38272), (19136, 33740), (19280, 33488), (20608, 31330), (20930, 30848), (21931, 29440), (22172, 29120), (23296, 27715), (23920, 26992), (25064, 25760)]