20771985920

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3851}}^1$

素因数の和:3931

約数の個数: 240

約数和(自身を含む): 59298088608

約数和(自身を除く): 38526102688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 49, 56, 64, 70, 80, 86, 98, 112, 128, 140, 160, 172, 196, 215, 224, 245, 256, 280, 301, 320, 344, 392, 430, 448, 490, 512, 560, 602, 640, 688, 784, 860, 896, 980, 1120, 1204, 1280, 1376, 1505, 1568, 1720, 1792, 1960, 2107, 2240, 2408, 2560, 2752, 3010, 3136, 3440, 3584, 3851, 3920, 4214, 4480, 4816, 5504, 6020, 6272, 6880, 7702, 7840, 8428, 8960, 9632, 10535, 11008, 12040, 12544, 13760, 15404, 15680, 16856, 17920, 19255, 19264, 21070, 22016, 24080, 25088, 26957, 27520, 30808, 31360, 33712, 38510, 38528, 42140, 48160, 53914, 55040, 61616, 62720, 67424, 77020, 77056, 84280, 96320, 107828, 110080, 123232, 125440, 134785, 134848, 154040, 154112, 165593, 168560, 188699, 192640, 215656, 246464, 269570, 269696, 308080, 331186, 337120, 377398, 385280, 431312, 492928, 539140, 539392, 616160, 662372, 674240, 754796, 770560, 827965, 862624, 943495, 985856, 1078280, 1078784, 1159151, 1232320, 1324744, 1348480, 1509592, 1655930, 1725248, 1886990, 1971712, 2156560, 2318302, 2464640, 2649488, 2696960, 3019184, 3311860, 3450496, 3773980, 4313120, 4636604, 4929280, 5298976, 5393920, 5795755, 6038368, 6623720, 6900992, 7547960, 8114057, 8626240, 9273208, 9858560, 10597952, 11591510, 12076736, 13247440, 13801984, 15095920, 16228114, 17252480, 18546416, 21195904, 23183020, 24153472, 26494880, 30191840, 32456228, 34504960, 37092832, 40570285, 42391808, 46366040, 48306944, 52989760, 60383680, 64912456, 69009920, 74185664, 81140570, 84783616, 92732080, 96613888, 105979520, 120767360, 129824912, 148371328, 162281140, 185464160, 211959040, 241534720, 259649824, 296742656, 324562280, 370928320, 423918080, 483069440, 519299648, 593485312, 649124560, 741856640, 1038599296, 1298249120, 1483713280, 2077198592, 2596498240, 2967426560, 4154397184, 5192996480, 10385992960, 20771985920]

約数ペア:

[(1, 20771985920), (2, 10385992960), (4, 5192996480), (5, 4154397184), (7, 2967426560), (8, 2596498240), (10, 2077198592), (14, 1483713280), (16, 1298249120), (20, 1038599296), (28, 741856640), (32, 649124560), (35, 593485312), (40, 519299648), (43, 483069440), (49, 423918080), (56, 370928320), (64, 324562280), (70, 296742656), (80, 259649824), (86, 241534720), (98, 211959040), (112, 185464160), (128, 162281140), (140, 148371328), (160, 129824912), (172, 120767360), (196, 105979520), (215, 96613888), (224, 92732080), (245, 84783616), (256, 81140570), (280, 74185664), (301, 69009920), (320, 64912456), (344, 60383680), (392, 52989760), (430, 48306944), (448, 46366040), (490, 42391808), (512, 40570285), (560, 37092832), (602, 34504960), (640, 32456228), (688, 30191840), (784, 26494880), (860, 24153472), (896, 23183020), (980, 21195904), (1120, 18546416), (1204, 17252480), (1280, 16228114), (1376, 15095920), (1505, 13801984), (1568, 13247440), (1720, 12076736), (1792, 11591510), (1960, 10597952), (2107, 9858560), (2240, 9273208), (2408, 8626240), (2560, 8114057), (2752, 7547960), (3010, 6900992), (3136, 6623720), (3440, 6038368), (3584, 5795755), (3851, 5393920), (3920, 5298976), (4214, 4929280), (4480, 4636604), (4816, 4313120), (5504, 3773980), (6020, 3450496), (6272, 3311860), (6880, 3019184), (7702, 2696960), (7840, 2649488), (8428, 2464640), (8960, 2318302), (9632, 2156560), (10535, 1971712), (11008, 1886990), (12040, 1725248), (12544, 1655930), (13760, 1509592), (15404, 1348480), (15680, 1324744), (16856, 1232320), (17920, 1159151), (19255, 1078784), (19264, 1078280), (21070, 985856), (22016, 943495), (24080, 862624), (25088, 827965), (26957, 770560), (27520, 754796), (30808, 674240), (31360, 662372), (33712, 616160), (38510, 539392), (38528, 539140), (42140, 492928), (48160, 431312), (53914, 385280), (55040, 377398), (61616, 337120), (62720, 331186), (67424, 308080), (77020, 269696), (77056, 269570), (84280, 246464), (96320, 215656), (107828, 192640), (110080, 188699), (123232, 168560), (125440, 165593), (134785, 154112), (134848, 154040)]