1266667520

素因数分解:

$2^{12}\times 5^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:643

約数の個数: 104

約数和(自身を含む): 3069855744

約数和(自身を除く): 1803188224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 487, 508, 512, 635, 640, 974, 1016, 1024, 1270, 1280, 1948, 2032, 2048, 2435, 2540, 2560, 3896, 4064, 4096, 4870, 5080, 5120, 7792, 8128, 9740, 10160, 10240, 15584, 16256, 19480, 20320, 20480, 31168, 32512, 38960, 40640, 61849, 62336, 65024, 77920, 81280, 123698, 124672, 130048, 155840, 162560, 247396, 249344, 260096, 309245, 311680, 325120, 494792, 498688, 520192, 618490, 623360, 650240, 989584, 997376, 1236980, 1246720, 1300480, 1979168, 1994752, 2473960, 2493440, 2600960, 3958336, 4947920, 4986880, 7916672, 9895840, 9973760, 15833344, 19791680, 31666688, 39583360, 63333376, 79166720, 126666752, 158333440, 253333504, 316666880, 633333760, 1266667520]

約数ペア:

[(1, 1266667520), (2, 633333760), (4, 316666880), (5, 253333504), (8, 158333440), (10, 126666752), (16, 79166720), (20, 63333376), (32, 39583360), (40, 31666688), (64, 19791680), (80, 15833344), (127, 9973760), (128, 9895840), (160, 7916672), (254, 4986880), (256, 4947920), (320, 3958336), (487, 2600960), (508, 2493440), (512, 2473960), (635, 1994752), (640, 1979168), (974, 1300480), (1016, 1246720), (1024, 1236980), (1270, 997376), (1280, 989584), (1948, 650240), (2032, 623360), (2048, 618490), (2435, 520192), (2540, 498688), (2560, 494792), (3896, 325120), (4064, 311680), (4096, 309245), (4870, 260096), (5080, 249344), (5120, 247396), (7792, 162560), (8128, 155840), (9740, 130048), (10160, 124672), (10240, 123698), (15584, 81280), (16256, 77920), (19480, 65024), (20320, 62336), (20480, 61849), (31168, 40640), (32512, 38960)]