816701440

素因数分解:

$2^{13}\times 5^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:315

約数の個数: 112

約数和(自身を含む): 1987978752

約数和(自身を除く): 1171277312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 157, 160, 254, 256, 314, 320, 508, 512, 628, 635, 640, 785, 1016, 1024, 1256, 1270, 1280, 1570, 2032, 2048, 2512, 2540, 2560, 3140, 4064, 4096, 5024, 5080, 5120, 6280, 8128, 8192, 10048, 10160, 10240, 12560, 16256, 19939, 20096, 20320, 20480, 25120, 32512, 39878, 40192, 40640, 40960, 50240, 65024, 79756, 80384, 81280, 99695, 100480, 130048, 159512, 160768, 162560, 199390, 200960, 260096, 319024, 321536, 325120, 398780, 401920, 520192, 638048, 643072, 650240, 797560, 803840, 1040384, 1276096, 1286144, 1300480, 1595120, 1607680, 2552192, 2600960, 3190240, 3215360, 5104384, 5201920, 6380480, 6430720, 10208768, 12760960, 20417536, 25521920, 40835072, 51043840, 81670144, 102087680, 163340288, 204175360, 408350720, 816701440]

約数ペア:

[(1, 816701440), (2, 408350720), (4, 204175360), (5, 163340288), (8, 102087680), (10, 81670144), (16, 51043840), (20, 40835072), (32, 25521920), (40, 20417536), (64, 12760960), (80, 10208768), (127, 6430720), (128, 6380480), (157, 5201920), (160, 5104384), (254, 3215360), (256, 3190240), (314, 2600960), (320, 2552192), (508, 1607680), (512, 1595120), (628, 1300480), (635, 1286144), (640, 1276096), (785, 1040384), (1016, 803840), (1024, 797560), (1256, 650240), (1270, 643072), (1280, 638048), (1570, 520192), (2032, 401920), (2048, 398780), (2512, 325120), (2540, 321536), (2560, 319024), (3140, 260096), (4064, 200960), (4096, 199390), (5024, 162560), (5080, 160768), (5120, 159512), (6280, 130048), (8128, 100480), (8192, 99695), (10048, 81280), (10160, 80384), (10240, 79756), (12560, 65024), (16256, 50240), (19939, 40960), (20096, 40640), (20320, 40192), (20480, 39878), (25120, 32512)]