665845760

素因数分解:

$2^{20}\times 5^1\times {\mathrm{127}}^1$

素因数の和:172

約数の個数: 84

約数和(自身を含む): 1610611968

約数和(自身を除く): 944766208

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, 16256, 16384, 20320, 20480, 32512, 32768, 40640, 40960, 65024, 65536, 81280, 81920, 130048, 131072, 162560, 163840, 260096, 262144, 325120, 327680, 520192, 524288, 650240, 655360, 1040384, 1048576, 1300480, 1310720, 2080768, 2600960, 2621440, 4161536, 5201920, 5242880, 8323072, 10403840, 16646144, 20807680, 33292288, 41615360, 66584576, 83230720, 133169152, 166461440, 332922880, 665845760]

約数ペア:

[(1, 665845760), (2, 332922880), (4, 166461440), (5, 133169152), (8, 83230720), (10, 66584576), (16, 41615360), (20, 33292288), (32, 20807680), (40, 16646144), (64, 10403840), (80, 8323072), (127, 5242880), (128, 5201920), (160, 4161536), (254, 2621440), (256, 2600960), (320, 2080768), (508, 1310720), (512, 1300480), (635, 1048576), (640, 1040384), (1016, 655360), (1024, 650240), (1270, 524288), (1280, 520192), (2032, 327680), (2048, 325120), (2540, 262144), (2560, 260096), (4064, 163840), (4096, 162560), (5080, 131072), (5120, 130048), (8128, 81920), (8192, 81280), (10160, 65536), (10240, 65024), (16256, 40960), (16384, 40640), (20320, 32768), (20480, 32512)]