1321287680

素因数分解:

$2^{14}\times 5^1\times {\mathrm{127}}^2$

素因数の和:287

約数の個数: 90

約数和(自身を含む): 3196158714

約数和(自身を除く): 1874871034

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 512, 635, 640, 1016, 1024, 1270, 1280, 2032, 2048, 2540, 2560, 4064, 4096, 5080, 5120, 8128, 8192, 10160, 10240, 16129, 16256, 16384, 20320, 20480, 32258, 32512, 40640, 40960, 64516, 65024, 80645, 81280, 81920, 129032, 130048, 161290, 162560, 258064, 260096, 322580, 325120, 516128, 520192, 645160, 650240, 1032256, 1040384, 1290320, 1300480, 2064512, 2080768, 2580640, 2600960, 4129024, 5161280, 5201920, 8258048, 10322560, 10403840, 16516096, 20645120, 33032192, 41290240, 66064384, 82580480, 132128768, 165160960, 264257536, 330321920, 660643840, 1321287680]

約数ペア:

[(1, 1321287680), (2, 660643840), (4, 330321920), (5, 264257536), (8, 165160960), (10, 132128768), (16, 82580480), (20, 66064384), (32, 41290240), (40, 33032192), (64, 20645120), (80, 16516096), (127, 10403840), (128, 10322560), (160, 8258048), (254, 5201920), (256, 5161280), (320, 4129024), (508, 2600960), (512, 2580640), (635, 2080768), (640, 2064512), (1016, 1300480), (1024, 1290320), (1270, 1040384), (1280, 1032256), (2032, 650240), (2048, 645160), (2540, 520192), (2560, 516128), (4064, 325120), (4096, 322580), (5080, 260096), (5120, 258064), (8128, 162560), (8192, 161290), (10160, 130048), (10240, 129032), (16129, 81920), (16256, 81280), (16384, 80645), (20320, 65024), (20480, 64516), (32258, 40960), (32512, 40640)]