19721388960

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^2$

素因数の和:238

約数の個数: 864

約数和(自身を含む): 88179960960

約数和(自身を除く): 68458572000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24, 26, 28, 30, 32, 35, 36, 38, 39, 40, 42, 45, 48, 52, 56, 57, 60, 63, 65, 70, 72, 76, 78, 80, 84, 89, 90, 91, 95, 96, 104, 105, 112, 114, 117, 120, 126, 130, 133, 140, 144, 152, 156, 160, 168, 171, 178, 180, 182, 190, 195, 208, 210, 224, 228, 234, 240, 247, 252, 260, 266, 267, 273, 280, 285, 288, 304, 312, 315, 336, 342, 356, 360, 364, 380, 390, 399, 416, 420, 445, 455, 456, 468, 480, 494, 504, 520, 532, 534, 546, 560, 570, 585, 608, 623, 624, 630, 665, 672, 684, 712, 720, 728, 741, 760, 780, 798, 801, 819, 840, 855, 890, 910, 912, 936, 988, 1008, 1040, 1064, 1068, 1092, 1120, 1140, 1157, 1170, 1197, 1235, 1246, 1248, 1260, 1330, 1335, 1365, 1368, 1424, 1440, 1456, 1482, 1520, 1560, 1596, 1602, 1638, 1680, 1691, 1710, 1729, 1780, 1820, 1824, 1869, 1872, 1976, 1995, 2016, 2080, 2128, 2136, 2184, 2223, 2280, 2314, 2340, 2394, 2470, 2492, 2520, 2660, 2670, 2730, 2736, 2848, 2912, 2964, 3040, 3115, 3120, 3192, 3204, 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39605, 40495, 40584, 41496, 41652, 42720, 43680, 43966, 44460, 44856, 46280, 47348, 47526, 47880, 48594, 49840, 50730, 51870, 52065, 54112, 55328, 55447, 55536, 56070, 59185, 59280, 59808, 60876, 62244, 63368, 63840, 64080, 64792, 65520, 65949, 67640, 69160, 69420, 71022, 71136, 71289, 72891, 74760, 76095, 77805, 79210, 80990, 81168, 82992, 83304, 87932, 88920, 89712, 92560, 94696, 95052, 95760, 97188, 99680, 101460, 102973, 103740, 104130, 106533, 109915, 110894, 111072, 112140, 118370, 118560, 118815, 121485, 121752, 124488, 126736, 128160, 129584, 131040, 131898, 135280, 138320, 138840, 142044, 142578, 145782, 149520, 150499, 152190, 153881, 155610, 158420, 161980, 162336, 165984, 166341, 166608, 175864, 177555, 177840, 179424, 185120, 189392, 190104, 191520, 194376, 197847, 202920, 205946, 207480, 208260, 213066, 219830, 221788, 224280, 236740, 237630, 242970, 243504, 248976, 253472, 259168, 263796, 270560, 276640, 277235, 277680, 284088, 285156, 291564, 299040, 300998, 304380, 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約数ペア:

[(1, 19721388960), (2, 9860694480), (3, 6573796320), (4, 4930347240), (5, 3944277792), (6, 3286898160), (7, 2817341280), (8, 2465173620), (9, 2191265440), (10, 1972138896), (12, 1643449080), (13, 1517029920), (14, 1408670640), (15, 1314759264), (16, 1232586810), (18, 1095632720), (19, 1037967840), (20, 986069448), (21, 939113760), (24, 821724540), (26, 758514960), (28, 704335320), (30, 657379632), (32, 616293405), (35, 563468256), (36, 547816360), (38, 518983920), (39, 505676640), (40, 493034724), (42, 469556880), (45, 438253088), (48, 410862270), (52, 379257480), (56, 352167660), (57, 345989280), (60, 328689816), (63, 313037920), (65, 303405984), (70, 281734128), (72, 273908180), (76, 259491960), (78, 252838320), (80, 246517362), (84, 234778440), (89, 221588640), (90, 219126544), (91, 216718560), (95, 207593568), (96, 205431135), (104, 189628740), (105, 187822752), (112, 176083830), (114, 172994640), (117, 168558880), (120, 164344908), (126, 156518960), (130, 151702992), (133, 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(1995, 9885408), (2016, 9782435), (2080, 9481437), (2128, 9267570), (2136, 9232860), (2184, 9029940), (2223, 8871520), (2280, 8649732), (2314, 8522640), (2340, 8427944), (2394, 8237840), (2470, 7984368), (2492, 7913880), (2520, 7825948), (2660, 7414056), (2670, 7386288), (2730, 7223952), (2736, 7208110), (2848, 6924645), (2912, 6772455), (2964, 6653640), (3040, 6487299), (3115, 6331104), (3120, 6320958), (3192, 6178380), (3204, 6155240), (3276, 6019960), (3360, 5869461), (3382, 5831280), (3420, 5766488), (3458, 5703120), (3471, 5681760), (3560, 5539716), (3640, 5417964), (3705, 5322912), (3738, 5275920), (3744, 5267465), (3952, 4990230), (3990, 4942704), (4005, 4924192), (4095, 4815968), (4256, 4633785), (4272, 4616430), (4368, 4514970), (4446, 4435760), (4560, 4324866), (4628, 4261320), (4680, 4213972), (4788, 4118920), (4940, 3992184), (4984, 3956940), (5040, 3912974), (5073, 3887520), (5187, 3802080), (5320, 3707028), (5340, 3693144), (5460, 3611976), (5472, 3604055), (5607, 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