647313920

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:342

約数の個数: 160

約数和(自身を含む): 1715890176

約数和(自身を除く): 1068576256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 127, 128, 160, 176, 181, 220, 254, 256, 320, 352, 362, 440, 508, 512, 635, 640, 704, 724, 880, 905, 1016, 1270, 1280, 1397, 1408, 1448, 1760, 1810, 1991, 2032, 2540, 2560, 2794, 2816, 2896, 3520, 3620, 3982, 4064, 5080, 5588, 5632, 5792, 6985, 7040, 7240, 7964, 8128, 9955, 10160, 11176, 11584, 13970, 14080, 14480, 15928, 16256, 19910, 20320, 22352, 22987, 23168, 27940, 28160, 28960, 31856, 32512, 39820, 40640, 44704, 45974, 46336, 55880, 57920, 63712, 65024, 79640, 81280, 89408, 91948, 92672, 111760, 114935, 115840, 127424, 159280, 162560, 178816, 183896, 223520, 229870, 231680, 252857, 254848, 318560, 325120, 357632, 367792, 447040, 459740, 463360, 505714, 509696, 637120, 715264, 735584, 894080, 919480, 1011428, 1019392, 1264285, 1274240, 1471168, 1788160, 1838960, 2022856, 2528570, 2548480, 2942336, 3576320, 3677920, 4045712, 5057140, 5096960, 5884672, 7355840, 8091424, 10114280, 11769344, 14711680, 16182848, 20228560, 29423360, 32365696, 40457120, 58846720, 64731392, 80914240, 129462784, 161828480, 323656960, 647313920]

約数ペア:

[(1, 647313920), (2, 323656960), (4, 161828480), (5, 129462784), (8, 80914240), (10, 64731392), (11, 58846720), (16, 40457120), (20, 32365696), (22, 29423360), (32, 20228560), (40, 16182848), (44, 14711680), (55, 11769344), (64, 10114280), (80, 8091424), (88, 7355840), (110, 5884672), (127, 5096960), (128, 5057140), (160, 4045712), (176, 3677920), (181, 3576320), (220, 2942336), (254, 2548480), (256, 2528570), (320, 2022856), (352, 1838960), (362, 1788160), (440, 1471168), (508, 1274240), (512, 1264285), (635, 1019392), (640, 1011428), (704, 919480), (724, 894080), (880, 735584), (905, 715264), (1016, 637120), (1270, 509696), (1280, 505714), (1397, 463360), (1408, 459740), (1448, 447040), (1760, 367792), (1810, 357632), (1991, 325120), (2032, 318560), (2540, 254848), (2560, 252857), (2794, 231680), (2816, 229870), (2896, 223520), (3520, 183896), (3620, 178816), (3982, 162560), (4064, 159280), (5080, 127424), (5588, 115840), (5632, 114935), (5792, 111760), (6985, 92672), (7040, 91948), (7240, 89408), (7964, 81280), (8128, 79640), (9955, 65024), (10160, 63712), (11176, 57920), (11584, 55880), (13970, 46336), (14080, 45974), (14480, 44704), (15928, 40640), (16256, 39820), (19910, 32512), (20320, 31856), (22352, 28960), (22987, 28160), (23168, 27940)]