257658240

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1009}}^1$

素因数の和:1057

約数の個数: 256

約数和(自身を含む): 988992000

約数和(自身を除く): 731333760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 42, 48, 56, 57, 60, 64, 70, 76, 80, 84, 95, 96, 105, 112, 114, 120, 128, 133, 140, 152, 160, 168, 190, 192, 210, 224, 228, 240, 266, 280, 285, 304, 320, 336, 380, 384, 399, 420, 448, 456, 480, 532, 560, 570, 608, 640, 665, 672, 760, 798, 840, 896, 912, 960, 1009, 1064, 1120, 1140, 1216, 1330, 1344, 1520, 1596, 1680, 1824, 1920, 1995, 2018, 2128, 2240, 2280, 2432, 2660, 2688, 3027, 3040, 3192, 3360, 3648, 3990, 4036, 4256, 4480, 4560, 5045, 5320, 6054, 6080, 6384, 6720, 7063, 7296, 7980, 8072, 8512, 9120, 10090, 10640, 12108, 12160, 12768, 13440, 14126, 15135, 15960, 16144, 17024, 18240, 19171, 20180, 21189, 21280, 24216, 25536, 28252, 30270, 31920, 32288, 35315, 36480, 38342, 40360, 42378, 42560, 48432, 51072, 56504, 57513, 60540, 63840, 64576, 70630, 76684, 80720, 84756, 85120, 95855, 96864, 105945, 113008, 115026, 121080, 127680, 129152, 134197, 141260, 153368, 161440, 169512, 191710, 193728, 211890, 226016, 230052, 242160, 255360, 268394, 282520, 287565, 306736, 322880, 339024, 383420, 387456, 402591, 423780, 452032, 460104, 484320, 536788, 565040, 575130, 613472, 645760, 670985, 678048, 766840, 805182, 847560, 904064, 920208, 968640, 1073576, 1130080, 1150260, 1226944, 1341970, 1356096, 1533680, 1610364, 1695120, 1840416, 1937280, 2012955, 2147152, 2260160, 2300520, 2453888, 2683940, 2712192, 3067360, 3220728, 3390240, 3680832, 4025910, 4294304, 4520320, 4601040, 5367880, 6134720, 6441456, 6780480, 7361664, 8051820, 8588608, 9202080, 10735760, 12269440, 12882912, 13560960, 16103640, 17177216, 18404160, 21471520, 25765824, 32207280, 36808320, 42943040, 51531648, 64414560, 85886080, 128829120, 257658240]

約数ペア:

[(1, 257658240), (2, 128829120), (3, 85886080), (4, 64414560), (5, 51531648), (6, 42943040), (7, 36808320), (8, 32207280), (10, 25765824), (12, 21471520), (14, 18404160), (15, 17177216), (16, 16103640), (19, 13560960), (20, 12882912), (21, 12269440), (24, 10735760), (28, 9202080), (30, 8588608), (32, 8051820), (35, 7361664), (38, 6780480), (40, 6441456), (42, 6134720), (48, 5367880), (56, 4601040), (57, 4520320), (60, 4294304), (64, 4025910), (70, 3680832), (76, 3390240), (80, 3220728), (84, 3067360), (95, 2712192), (96, 2683940), (105, 2453888), (112, 2300520), (114, 2260160), (120, 2147152), (128, 2012955), (133, 1937280), (140, 1840416), (152, 1695120), (160, 1610364), (168, 1533680), (190, 1356096), (192, 1341970), (210, 1226944), (224, 1150260), (228, 1130080), (240, 1073576), (266, 968640), (280, 920208), (285, 904064), (304, 847560), (320, 805182), (336, 766840), (380, 678048), (384, 670985), (399, 645760), (420, 613472), (448, 575130), (456, 565040), (480, 536788), (532, 484320), (560, 460104), (570, 452032), (608, 423780), (640, 402591), (665, 387456), (672, 383420), (760, 339024), (798, 322880), (840, 306736), (896, 287565), (912, 282520), (960, 268394), (1009, 255360), (1064, 242160), (1120, 230052), (1140, 226016), (1216, 211890), (1330, 193728), (1344, 191710), (1520, 169512), (1596, 161440), (1680, 153368), (1824, 141260), (1920, 134197), (1995, 129152), (2018, 127680), (2128, 121080), (2240, 115026), (2280, 113008), (2432, 105945), (2660, 96864), (2688, 95855), (3027, 85120), (3040, 84756), (3192, 80720), (3360, 76684), (3648, 70630), (3990, 64576), (4036, 63840), (4256, 60540), (4480, 57513), (4560, 56504), (5045, 51072), (5320, 48432), (6054, 42560), (6080, 42378), (6384, 40360), (6720, 38342), (7063, 36480), (7296, 35315), (7980, 32288), (8072, 31920), (8512, 30270), (9120, 28252), (10090, 25536), (10640, 24216), (12108, 21280), (12160, 21189), (12768, 20180), (13440, 19171), (14126, 18240), (15135, 17024), (15960, 16144)]