648776960

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:468

約数の個数: 144

約数和(自身を含む): 1692235776

約数和(自身を除く): 1043458816

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 127, 128, 130, 160, 208, 254, 256, 260, 307, 320, 416, 508, 520, 614, 635, 640, 832, 1016, 1040, 1228, 1270, 1280, 1535, 1651, 1664, 2032, 2080, 2456, 2540, 3070, 3302, 3328, 3991, 4064, 4160, 4912, 5080, 6140, 6604, 7982, 8128, 8255, 8320, 9824, 10160, 12280, 13208, 15964, 16256, 16510, 16640, 19648, 19955, 20320, 24560, 26416, 31928, 32512, 33020, 38989, 39296, 39910, 40640, 49120, 52832, 63856, 66040, 77978, 78592, 79820, 81280, 98240, 105664, 127712, 132080, 155956, 159640, 162560, 194945, 196480, 211328, 255424, 264160, 311912, 319280, 389890, 392960, 422656, 506857, 510848, 528320, 623824, 638560, 779780, 1013714, 1021696, 1056640, 1247648, 1277120, 1559560, 2027428, 2113280, 2495296, 2534285, 2554240, 3119120, 4054856, 4990592, 5068570, 5108480, 6238240, 8109712, 9981184, 10137140, 12476480, 16219424, 20274280, 24952960, 32438848, 40548560, 49905920, 64877696, 81097120, 129755392, 162194240, 324388480, 648776960]

約数ペア:

[(1, 648776960), (2, 324388480), (4, 162194240), (5, 129755392), (8, 81097120), (10, 64877696), (13, 49905920), (16, 40548560), (20, 32438848), (26, 24952960), (32, 20274280), (40, 16219424), (52, 12476480), (64, 10137140), (65, 9981184), (80, 8109712), (104, 6238240), (127, 5108480), (128, 5068570), (130, 4990592), (160, 4054856), (208, 3119120), (254, 2554240), (256, 2534285), (260, 2495296), (307, 2113280), (320, 2027428), (416, 1559560), (508, 1277120), (520, 1247648), (614, 1056640), (635, 1021696), (640, 1013714), (832, 779780), (1016, 638560), (1040, 623824), (1228, 528320), (1270, 510848), (1280, 506857), (1535, 422656), (1651, 392960), (1664, 389890), (2032, 319280), (2080, 311912), (2456, 264160), (2540, 255424), (3070, 211328), (3302, 196480), (3328, 194945), (3991, 162560), (4064, 159640), (4160, 155956), (4912, 132080), (5080, 127712), (6140, 105664), (6604, 98240), (7982, 81280), (8128, 79820), (8255, 78592), (8320, 77978), (9824, 66040), (10160, 63856), (12280, 52832), (13208, 49120), (15964, 40640), (16256, 39910), (16510, 39296), (16640, 38989), (19648, 33020), (19955, 32512), (20320, 31928), (24560, 26416)]