1331691520

素因数分解:

$2^{21}\times 5^1\times {\mathrm{127}}^1$

素因数の和:174

約数の個数: 88

約数和(自身を含む): 3221224704

約数和(自身を除く): 1889533184

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, 2097152, 2600960, 2621440, 4161536, 5201920, 5242880, 8323072, 10403840, 10485760, 16646144, 20807680, 33292288, 41615360, 66584576, 83230720, 133169152, 166461440, 266338304, 332922880, 665845760, 1331691520]

約数ペア:

[(1, 1331691520), (2, 665845760), (4, 332922880), (5, 266338304), (8, 166461440), (10, 133169152), (16, 83230720), (20, 66584576), (32, 41615360), (40, 33292288), (64, 20807680), (80, 16646144), (127, 10485760), (128, 10403840), (160, 8323072), (254, 5242880), (256, 5201920), (320, 4161536), (508, 2621440), (512, 2600960), (635, 2097152), (640, 2080768), (1016, 1310720), (1024, 1300480), (1270, 1048576), (1280, 1040384), (2032, 655360), (2048, 650240), (2540, 524288), (2560, 520192), (4064, 327680), (4096, 325120), (5080, 262144), (5120, 260096), (8128, 163840), (8192, 162560), (10160, 131072), (10240, 130048), (16256, 81920), (16384, 81280), (20320, 65536), (20480, 65024), (32512, 40960), (32768, 40640)]