681451520

素因数分解:

$2^{13}\times 5^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 112

約数和(自身を含む): 1660843008

約数和(自身を除く): 979391488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 131, 160, 254, 256, 262, 320, 508, 512, 524, 635, 640, 655, 1016, 1024, 1048, 1270, 1280, 1310, 2032, 2048, 2096, 2540, 2560, 2620, 4064, 4096, 4192, 5080, 5120, 5240, 8128, 8192, 8384, 10160, 10240, 10480, 16256, 16637, 16768, 20320, 20480, 20960, 32512, 33274, 33536, 40640, 40960, 41920, 65024, 66548, 67072, 81280, 83185, 83840, 130048, 133096, 134144, 162560, 166370, 167680, 260096, 266192, 268288, 325120, 332740, 335360, 520192, 532384, 536576, 650240, 665480, 670720, 1040384, 1064768, 1073152, 1300480, 1330960, 1341440, 2129536, 2600960, 2661920, 2682880, 4259072, 5201920, 5323840, 5365760, 8518144, 10647680, 17036288, 21295360, 34072576, 42590720, 68145152, 85181440, 136290304, 170362880, 340725760, 681451520]

約数ペア:

[(1, 681451520), (2, 340725760), (4, 170362880), (5, 136290304), (8, 85181440), (10, 68145152), (16, 42590720), (20, 34072576), (32, 21295360), (40, 17036288), (64, 10647680), (80, 8518144), (127, 5365760), (128, 5323840), (131, 5201920), (160, 4259072), (254, 2682880), (256, 2661920), (262, 2600960), (320, 2129536), (508, 1341440), (512, 1330960), (524, 1300480), (635, 1073152), (640, 1064768), (655, 1040384), (1016, 670720), (1024, 665480), (1048, 650240), (1270, 536576), (1280, 532384), (1310, 520192), (2032, 335360), (2048, 332740), (2096, 325120), (2540, 268288), (2560, 266192), (2620, 260096), (4064, 167680), (4096, 166370), (4192, 162560), (5080, 134144), (5120, 133096), (5240, 130048), (8128, 83840), (8192, 83185), (8384, 81280), (10160, 67072), (10240, 66548), (10480, 65024), (16256, 41920), (16637, 40960), (16768, 40640), (20320, 33536), (20480, 33274), (20960, 32512)]