1278080640

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2064

約数の個数: 256

約数和(自身を含む): 4651200000

約数和(自身を除く): 3373119360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 37, 40, 45, 48, 54, 60, 64, 72, 74, 80, 90, 96, 108, 111, 120, 128, 135, 144, 148, 160, 180, 185, 192, 216, 222, 240, 270, 288, 296, 320, 333, 360, 370, 384, 432, 444, 480, 540, 555, 576, 592, 640, 666, 720, 740, 864, 888, 960, 999, 1080, 1110, 1152, 1184, 1332, 1440, 1480, 1665, 1728, 1776, 1920, 1998, 1999, 2160, 2220, 2368, 2664, 2880, 2960, 3330, 3456, 3552, 3996, 3998, 4320, 4440, 4736, 4995, 5328, 5760, 5920, 5997, 6660, 7104, 7992, 7996, 8640, 8880, 9990, 9995, 10656, 11840, 11994, 13320, 14208, 15984, 15992, 17280, 17760, 17991, 19980, 19990, 21312, 23680, 23988, 26640, 29985, 31968, 31984, 35520, 35982, 39960, 39980, 42624, 47976, 53280, 53973, 59970, 63936, 63968, 71040, 71964, 73963, 79920, 79960, 89955, 95952, 106560, 107946, 119940, 127872, 127936, 143928, 147926, 159840, 159920, 179910, 191904, 213120, 215892, 221889, 239880, 255872, 269865, 287856, 295852, 319680, 319840, 359820, 369815, 383808, 431784, 443778, 479760, 539730, 575712, 591704, 639360, 639680, 665667, 719640, 739630, 767616, 863568, 887556, 959520, 1079460, 1109445, 1151424, 1183408, 1279360, 1331334, 1439280, 1479260, 1727136, 1775112, 1919040, 1997001, 2158920, 2218890, 2302848, 2366816, 2662668, 2878560, 2958520, 3328335, 3454272, 3550224, 3838080, 3994002, 4317840, 4437780, 4733632, 5325336, 5757120, 5917040, 6656670, 6908544, 7100448, 7988004, 8635680, 8875560, 9467264, 9985005, 10650672, 11514240, 11834080, 13313340, 14200896, 15976008, 17271360, 17751120, 19970010, 21301344, 23668160, 26626680, 28401792, 31952016, 34542720, 35502240, 39940020, 42602688, 47336320, 53253360, 63904032, 71004480, 79880040, 85205376, 106506720, 127808064, 142008960, 159760080, 213013440, 255616128, 319520160, 426026880, 639040320, 1278080640]

約数ペア:

[(1, 1278080640), (2, 639040320), (3, 426026880), (4, 319520160), (5, 255616128), (6, 213013440), (8, 159760080), (9, 142008960), (10, 127808064), (12, 106506720), (15, 85205376), (16, 79880040), (18, 71004480), (20, 63904032), (24, 53253360), (27, 47336320), (30, 42602688), (32, 39940020), (36, 35502240), (37, 34542720), (40, 31952016), (45, 28401792), (48, 26626680), (54, 23668160), (60, 21301344), (64, 19970010), (72, 17751120), (74, 17271360), (80, 15976008), (90, 14200896), (96, 13313340), (108, 11834080), (111, 11514240), (120, 10650672), (128, 9985005), (135, 9467264), (144, 8875560), (148, 8635680), (160, 7988004), (180, 7100448), (185, 6908544), (192, 6656670), (216, 5917040), (222, 5757120), (240, 5325336), (270, 4733632), (288, 4437780), (296, 4317840), (320, 3994002), (333, 3838080), (360, 3550224), (370, 3454272), (384, 3328335), (432, 2958520), (444, 2878560), (480, 2662668), (540, 2366816), (555, 2302848), (576, 2218890), (592, 2158920), (640, 1997001), (666, 1919040), (720, 1775112), (740, 1727136), (864, 1479260), (888, 1439280), (960, 1331334), (999, 1279360), (1080, 1183408), (1110, 1151424), (1152, 1109445), (1184, 1079460), (1332, 959520), (1440, 887556), (1480, 863568), (1665, 767616), (1728, 739630), (1776, 719640), (1920, 665667), (1998, 639680), (1999, 639360), (2160, 591704), (2220, 575712), (2368, 539730), (2664, 479760), (2880, 443778), (2960, 431784), (3330, 383808), (3456, 369815), (3552, 359820), (3996, 319840), (3998, 319680), (4320, 295852), (4440, 287856), (4736, 269865), (4995, 255872), (5328, 239880), (5760, 221889), (5920, 215892), (5997, 213120), (6660, 191904), (7104, 179910), (7992, 159920), (7996, 159840), (8640, 147926), (8880, 143928), (9990, 127936), (9995, 127872), (10656, 119940), (11840, 107946), (11994, 106560), (13320, 95952), (14208, 89955), (15984, 79960), (15992, 79920), (17280, 73963), (17760, 71964), (17991, 71040), (19980, 63968), (19990, 63936), (21312, 59970), (23680, 53973), (23988, 53280), (26640, 47976), (29985, 42624), (31968, 39980), (31984, 39960), (35520, 35982)]