647761920

素因数分解:

$2^{12}\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:856

約数の個数: 208

約数和(自身を含む): 2234766912

約数和(自身を除く): 1587004992

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 512, 520, 624, 640, 768, 780, 811, 832, 960, 1024, 1040, 1248, 1280, 1536, 1560, 1622, 1664, 1920, 2048, 2080, 2433, 2496, 2560, 3072, 3120, 3244, 3328, 3840, 4055, 4096, 4160, 4866, 4992, 5120, 6144, 6240, 6488, 6656, 7680, 8110, 8320, 9732, 9984, 10240, 10543, 12165, 12288, 12480, 12976, 13312, 15360, 16220, 16640, 19464, 19968, 20480, 21086, 24330, 24960, 25952, 26624, 30720, 31629, 32440, 33280, 38928, 39936, 42172, 48660, 49920, 51904, 52715, 53248, 61440, 63258, 64880, 66560, 77856, 79872, 84344, 97320, 99840, 103808, 105430, 126516, 129760, 133120, 155712, 158145, 159744, 168688, 194640, 199680, 207616, 210860, 253032, 259520, 266240, 311424, 316290, 337376, 389280, 399360, 415232, 421720, 506064, 519040, 622848, 632580, 674752, 778560, 798720, 830464, 843440, 1012128, 1038080, 1245696, 1265160, 1349504, 1557120, 1660928, 1686880, 2024256, 2076160, 2491392, 2530320, 2699008, 3114240, 3321856, 3373760, 4048512, 4152320, 4982784, 5060640, 5398016, 6228480, 6747520, 8097024, 8304640, 9965568, 10121280, 10796032, 12456960, 13495040, 16194048, 16609280, 20242560, 21592064, 24913920, 26990080, 32388096, 40485120, 43184128, 49827840, 53980160, 64776192, 80970240, 107960320, 129552384, 161940480, 215920640, 323880960, 647761920]

約数ペア:

[(1, 647761920), (2, 323880960), (3, 215920640), (4, 161940480), (5, 129552384), (6, 107960320), (8, 80970240), (10, 64776192), (12, 53980160), (13, 49827840), (15, 43184128), (16, 40485120), (20, 32388096), (24, 26990080), (26, 24913920), (30, 21592064), (32, 20242560), (39, 16609280), (40, 16194048), (48, 13495040), (52, 12456960), (60, 10796032), (64, 10121280), (65, 9965568), (78, 8304640), (80, 8097024), (96, 6747520), (104, 6228480), (120, 5398016), (128, 5060640), (130, 4982784), (156, 4152320), (160, 4048512), (192, 3373760), (195, 3321856), (208, 3114240), (240, 2699008), (256, 2530320), (260, 2491392), (312, 2076160), (320, 2024256), (384, 1686880), (390, 1660928), (416, 1557120), (480, 1349504), (512, 1265160), (520, 1245696), (624, 1038080), (640, 1012128), (768, 843440), (780, 830464), (811, 798720), (832, 778560), (960, 674752), (1024, 632580), (1040, 622848), (1248, 519040), (1280, 506064), (1536, 421720), (1560, 415232), (1622, 399360), (1664, 389280), (1920, 337376), (2048, 316290), (2080, 311424), (2433, 266240), (2496, 259520), (2560, 253032), (3072, 210860), (3120, 207616), (3244, 199680), (3328, 194640), (3840, 168688), (4055, 159744), (4096, 158145), (4160, 155712), (4866, 133120), (4992, 129760), (5120, 126516), (6144, 105430), (6240, 103808), (6488, 99840), (6656, 97320), (7680, 84344), (8110, 79872), (8320, 77856), (9732, 66560), (9984, 64880), (10240, 63258), (10543, 61440), (12165, 53248), (12288, 52715), (12480, 51904), (12976, 49920), (13312, 48660), (15360, 42172), (16220, 39936), (16640, 38928), (19464, 33280), (19968, 32440), (20480, 31629), (21086, 30720), (24330, 26624), (24960, 25952)]