249979640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 615859200

約数和(自身を除く): 365879560

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 71, 86, 89, 92, 115, 142, 172, 178, 184, 215, 230, 284, 344, 355, 356, 430, 445, 460, 568, 710, 712, 860, 890, 920, 989, 1420, 1633, 1720, 1780, 1978, 2047, 2840, 3053, 3266, 3560, 3827, 3956, 4094, 4945, 6106, 6319, 6532, 7654, 7912, 8165, 8188, 9890, 10235, 12212, 12638, 13064, 15265, 15308, 16330, 16376, 19135, 19780, 20470, 24424, 25276, 30530, 30616, 31595, 32660, 38270, 39560, 40940, 50552, 61060, 63190, 65320, 70219, 76540, 81880, 88021, 122120, 126380, 140438, 145337, 153080, 176042, 252760, 271717, 280876, 290674, 351095, 352084, 440105, 543434, 561752, 581348, 702190, 704168, 726685, 880210, 1086868, 1162696, 1358585, 1404380, 1453370, 1760420, 2173736, 2717170, 2808760, 2906740, 3520840, 5434340, 5813480, 6249491, 10868680, 12498982, 24997964, 31247455, 49995928, 62494910, 124989820, 249979640]

約数ペア:

[(1, 249979640), (2, 124989820), (4, 62494910), (5, 49995928), (8, 31247455), (10, 24997964), (20, 12498982), (23, 10868680), (40, 6249491), (43, 5813480), (46, 5434340), (71, 3520840), (86, 2906740), (89, 2808760), (92, 2717170), (115, 2173736), (142, 1760420), (172, 1453370), (178, 1404380), (184, 1358585), (215, 1162696), (230, 1086868), (284, 880210), (344, 726685), (355, 704168), (356, 702190), (430, 581348), (445, 561752), (460, 543434), (568, 440105), (710, 352084), (712, 351095), (860, 290674), (890, 280876), (920, 271717), (989, 252760), (1420, 176042), (1633, 153080), (1720, 145337), (1780, 140438), (1978, 126380), (2047, 122120), (2840, 88021), (3053, 81880), (3266, 76540), (3560, 70219), (3827, 65320), (3956, 63190), (4094, 61060), (4945, 50552), (6106, 40940), (6319, 39560), (6532, 38270), (7654, 32660), (7912, 31595), (8165, 30616), (8188, 30530), (9890, 25276), (10235, 24424), (12212, 20470), (12638, 19780), (13064, 19135), (15265, 16376), (15308, 16330)]