656311680

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2046

約数の個数: 256

約数和(自身を含む): 2448000000

約数和(自身を除く): 1791688320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 64, 72, 76, 80, 90, 95, 96, 108, 114, 120, 128, 135, 144, 152, 160, 171, 180, 190, 192, 216, 228, 240, 270, 285, 288, 304, 320, 342, 360, 380, 384, 432, 456, 480, 513, 540, 570, 576, 608, 640, 684, 720, 760, 855, 864, 912, 960, 1026, 1080, 1140, 1152, 1216, 1368, 1440, 1520, 1710, 1728, 1824, 1920, 1999, 2052, 2160, 2280, 2432, 2565, 2736, 2880, 3040, 3420, 3456, 3648, 3998, 4104, 4320, 4560, 5130, 5472, 5760, 5997, 6080, 6840, 7296, 7996, 8208, 8640, 9120, 9995, 10260, 10944, 11994, 12160, 13680, 15992, 16416, 17280, 17991, 18240, 19990, 20520, 21888, 23988, 27360, 29985, 31984, 32832, 35982, 36480, 37981, 39980, 41040, 47976, 53973, 54720, 59970, 63968, 65664, 71964, 75962, 79960, 82080, 89955, 95952, 107946, 109440, 113943, 119940, 127936, 143928, 151924, 159920, 164160, 179910, 189905, 191904, 215892, 227886, 239880, 255872, 269865, 287856, 303848, 319840, 328320, 341829, 359820, 379810, 383808, 431784, 455772, 479760, 539730, 569715, 575712, 607696, 639680, 683658, 719640, 759620, 767616, 863568, 911544, 959520, 1025487, 1079460, 1139430, 1151424, 1215392, 1279360, 1367316, 1439280, 1519240, 1709145, 1727136, 1823088, 1919040, 2050974, 2158920, 2278860, 2302848, 2430784, 2734632, 2878560, 3038480, 3418290, 3454272, 3646176, 3838080, 4101948, 4317840, 4557720, 4861568, 5127435, 5469264, 5757120, 6076960, 6836580, 6908544, 7292352, 8203896, 8635680, 9115440, 10254870, 10938528, 11514240, 12153920, 13673160, 14584704, 16407792, 17271360, 18230880, 20509740, 21877056, 24307840, 27346320, 32815584, 34542720, 36461760, 41019480, 43754112, 54692640, 65631168, 72923520, 82038960, 109385280, 131262336, 164077920, 218770560, 328155840, 656311680]

約数ペア:

[(1, 656311680), (2, 328155840), (3, 218770560), (4, 164077920), (5, 131262336), (6, 109385280), (8, 82038960), (9, 72923520), (10, 65631168), (12, 54692640), (15, 43754112), (16, 41019480), (18, 36461760), (19, 34542720), (20, 32815584), (24, 27346320), (27, 24307840), (30, 21877056), (32, 20509740), (36, 18230880), (38, 17271360), (40, 16407792), (45, 14584704), (48, 13673160), (54, 12153920), (57, 11514240), (60, 10938528), (64, 10254870), (72, 9115440), (76, 8635680), (80, 8203896), (90, 7292352), (95, 6908544), (96, 6836580), (108, 6076960), (114, 5757120), (120, 5469264), (128, 5127435), (135, 4861568), (144, 4557720), (152, 4317840), (160, 4101948), (171, 3838080), (180, 3646176), (190, 3454272), (192, 3418290), (216, 3038480), (228, 2878560), (240, 2734632), (270, 2430784), (285, 2302848), (288, 2278860), (304, 2158920), (320, 2050974), (342, 1919040), (360, 1823088), (380, 1727136), (384, 1709145), (432, 1519240), (456, 1439280), (480, 1367316), (513, 1279360), (540, 1215392), (570, 1151424), (576, 1139430), (608, 1079460), (640, 1025487), (684, 959520), (720, 911544), (760, 863568), (855, 767616), (864, 759620), (912, 719640), (960, 683658), (1026, 639680), (1080, 607696), (1140, 575712), (1152, 569715), (1216, 539730), (1368, 479760), (1440, 455772), (1520, 431784), (1710, 383808), (1728, 379810), (1824, 359820), (1920, 341829), (1999, 328320), (2052, 319840), (2160, 303848), (2280, 287856), (2432, 269865), (2565, 255872), (2736, 239880), (2880, 227886), (3040, 215892), (3420, 191904), (3456, 189905), (3648, 179910), (3998, 164160), (4104, 159920), (4320, 151924), (4560, 143928), (5130, 127936), (5472, 119940), (5760, 113943), (5997, 109440), (6080, 107946), (6840, 95952), (7296, 89955), (7996, 82080), (8208, 79960), (8640, 75962), (9120, 71964), (9995, 65664), (10260, 63968), (10944, 59970), (11994, 54720), (12160, 53973), (13680, 47976), (15992, 41040), (16416, 39980), (17280, 37981), (17991, 36480), (18240, 35982), (19990, 32832), (20520, 31984), (21888, 29985), (23988, 27360)]