1280972800

素因数分解:

$2^{11}\times 5^2\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:356

約数の個数: 144

約数和(自身を含む): 3217294080

約数和(自身を除く): 1936321280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 197, 200, 254, 256, 320, 394, 400, 508, 512, 635, 640, 788, 800, 985, 1016, 1024, 1270, 1280, 1576, 1600, 1970, 2032, 2048, 2540, 2560, 3152, 3175, 3200, 3940, 4064, 4925, 5080, 5120, 6304, 6350, 6400, 7880, 8128, 9850, 10160, 10240, 12608, 12700, 12800, 15760, 16256, 19700, 20320, 25019, 25216, 25400, 25600, 31520, 32512, 39400, 40640, 50038, 50432, 50800, 51200, 63040, 65024, 78800, 81280, 100076, 100864, 101600, 125095, 126080, 130048, 157600, 162560, 200152, 201728, 203200, 250190, 252160, 260096, 315200, 325120, 400304, 403456, 406400, 500380, 504320, 625475, 630400, 650240, 800608, 812800, 1000760, 1008640, 1250950, 1260800, 1300480, 1601216, 1625600, 2001520, 2017280, 2501900, 2521600, 3202432, 3251200, 4003040, 5003800, 5043200, 6404864, 6502400, 8006080, 10007600, 10086400, 12809728, 16012160, 20015200, 25619456, 32024320, 40030400, 51238912, 64048640, 80060800, 128097280, 160121600, 256194560, 320243200, 640486400, 1280972800]

約数ペア:

[(1, 1280972800), (2, 640486400), (4, 320243200), (5, 256194560), (8, 160121600), (10, 128097280), (16, 80060800), (20, 64048640), (25, 51238912), (32, 40030400), (40, 32024320), (50, 25619456), (64, 20015200), (80, 16012160), (100, 12809728), (127, 10086400), (128, 10007600), (160, 8006080), (197, 6502400), (200, 6404864), (254, 5043200), (256, 5003800), (320, 4003040), (394, 3251200), (400, 3202432), (508, 2521600), (512, 2501900), (635, 2017280), (640, 2001520), (788, 1625600), (800, 1601216), (985, 1300480), (1016, 1260800), (1024, 1250950), (1270, 1008640), (1280, 1000760), (1576, 812800), (1600, 800608), (1970, 650240), (2032, 630400), (2048, 625475), (2540, 504320), (2560, 500380), (3152, 406400), (3175, 403456), (3200, 400304), (3940, 325120), (4064, 315200), (4925, 260096), (5080, 252160), (5120, 250190), (6304, 203200), (6350, 201728), (6400, 200152), (7880, 162560), (8128, 157600), (9850, 130048), (10160, 126080), (10240, 125095), (12608, 101600), (12700, 100864), (12800, 100076), (15760, 81280), (16256, 78800), (19700, 65024), (20320, 63040), (25019, 51200), (25216, 50800), (25400, 50432), (25600, 50038), (31520, 40640), (32512, 39400)]