20285130880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{353}}^1$

素因数の和:607

約数の個数: 256

約数和(自身を含む): 56571125760

約数和(自身を除く): 36285994880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 101, 112, 127, 128, 140, 160, 202, 224, 254, 280, 320, 353, 404, 448, 505, 508, 560, 635, 640, 706, 707, 808, 889, 896, 1010, 1016, 1120, 1270, 1412, 1414, 1616, 1765, 1778, 2020, 2032, 2240, 2471, 2540, 2824, 2828, 3232, 3530, 3535, 3556, 4040, 4064, 4445, 4480, 4942, 5080, 5648, 5656, 6464, 7060, 7070, 7112, 8080, 8128, 8890, 9884, 10160, 11296, 11312, 12355, 12827, 12928, 14120, 14140, 14224, 16160, 16256, 17780, 19768, 20320, 22592, 22624, 24710, 25654, 28240, 28280, 28448, 32320, 35560, 35653, 39536, 40640, 44831, 45184, 45248, 49420, 51308, 56480, 56560, 56896, 64135, 64640, 71120, 71306, 79072, 81280, 89662, 89789, 90496, 98840, 102616, 112960, 113120, 113792, 128270, 142240, 142612, 158144, 178265, 179324, 179578, 197680, 205232, 224155, 225920, 226240, 249571, 256540, 284480, 285224, 313817, 316288, 356530, 358648, 359156, 395360, 410464, 448310, 448945, 452480, 499142, 513080, 568960, 570448, 627634, 713060, 717296, 718312, 790720, 820928, 896620, 897890, 998284, 1026160, 1140896, 1247855, 1255268, 1426120, 1434592, 1436624, 1569085, 1581440, 1641856, 1793240, 1795780, 1996568, 2052320, 2281792, 2495710, 2510536, 2852240, 2869184, 2873248, 3138170, 3586480, 3591560, 3993136, 4104640, 4527931, 4563584, 4991420, 5021072, 5704480, 5738368, 5746496, 6276340, 7172960, 7183120, 7986272, 8209280, 9055862, 9982840, 10042144, 11408960, 11492992, 12552680, 14345920, 14366240, 15972544, 18111724, 19965680, 20084288, 22639655, 22817920, 25105360, 28691840, 28732480, 31695517, 31945088, 36223448, 39931360, 40168576, 45279310, 50210720, 57464960, 63391034, 72446896, 79862720, 90558620, 100421440, 126782068, 144893792, 158477585, 159725440, 181117240, 200842880, 253564136, 289787584, 316955170, 362234480, 507128272, 579575168, 633910340, 724468960, 1014256544, 1267820680, 1448937920, 2028513088, 2535641360, 2897875840, 4057026176, 5071282720, 10142565440, 20285130880]

約数ペア:

[(1, 20285130880), (2, 10142565440), (4, 5071282720), (5, 4057026176), (7, 2897875840), (8, 2535641360), (10, 2028513088), (14, 1448937920), (16, 1267820680), (20, 1014256544), (28, 724468960), (32, 633910340), (35, 579575168), (40, 507128272), (56, 362234480), (64, 316955170), (70, 289787584), (80, 253564136), (101, 200842880), (112, 181117240), (127, 159725440), (128, 158477585), (140, 144893792), (160, 126782068), (202, 100421440), (224, 90558620), (254, 79862720), (280, 72446896), (320, 63391034), (353, 57464960), (404, 50210720), (448, 45279310), (505, 40168576), (508, 39931360), (560, 36223448), (635, 31945088), (640, 31695517), (706, 28732480), (707, 28691840), (808, 25105360), (889, 22817920), (896, 22639655), (1010, 20084288), (1016, 19965680), (1120, 18111724), (1270, 15972544), (1412, 14366240), (1414, 14345920), (1616, 12552680), (1765, 11492992), (1778, 11408960), (2020, 10042144), (2032, 9982840), (2240, 9055862), (2471, 8209280), (2540, 7986272), (2824, 7183120), (2828, 7172960), (3232, 6276340), (3530, 5746496), (3535, 5738368), (3556, 5704480), (4040, 5021072), (4064, 4991420), (4445, 4563584), (4480, 4527931), (4942, 4104640), (5080, 3993136), (5648, 3591560), (5656, 3586480), (6464, 3138170), (7060, 2873248), (7070, 2869184), (7112, 2852240), (8080, 2510536), (8128, 2495710), (8890, 2281792), (9884, 2052320), (10160, 1996568), (11296, 1795780), (11312, 1793240), (12355, 1641856), (12827, 1581440), (12928, 1569085), (14120, 1436624), (14140, 1434592), (14224, 1426120), (16160, 1255268), (16256, 1247855), (17780, 1140896), (19768, 1026160), (20320, 998284), (22592, 897890), (22624, 896620), (24710, 820928), (25654, 790720), (28240, 718312), (28280, 717296), (28448, 713060), (32320, 627634), (35560, 570448), (35653, 568960), (39536, 513080), (40640, 499142), (44831, 452480), (45184, 448945), (45248, 448310), (49420, 410464), (51308, 395360), (56480, 359156), (56560, 358648), (56896, 356530), (64135, 316288), (64640, 313817), (71120, 285224), (71306, 284480), (79072, 256540), (81280, 249571), (89662, 226240), (89789, 225920), (90496, 224155), (98840, 205232), (102616, 197680), (112960, 179578), (113120, 179324), (113792, 178265), (128270, 158144), (142240, 142612)]