20791680

素因数分解:

$2^7\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:66

約数の個数: 384

約数和(自身を含む): 87907680

約数和(自身を除く): 67116000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 17, 20, 21, 24, 26, 28, 30, 32, 34, 35, 39, 40, 42, 48, 49, 51, 52, 56, 60, 64, 65, 68, 70, 78, 80, 84, 85, 91, 96, 98, 102, 104, 105, 112, 119, 120, 128, 130, 136, 140, 147, 156, 160, 168, 170, 182, 192, 195, 196, 204, 208, 210, 221, 224, 238, 240, 245, 255, 260, 272, 273, 280, 294, 312, 320, 336, 340, 357, 364, 384, 390, 392, 408, 416, 420, 442, 448, 455, 476, 480, 490, 510, 520, 544, 546, 560, 588, 595, 624, 637, 640, 663, 672, 680, 714, 728, 735, 780, 784, 816, 832, 833, 840, 884, 896, 910, 952, 960, 980, 1020, 1040, 1088, 1092, 1105, 1120, 1176, 1190, 1248, 1274, 1326, 1344, 1360, 1365, 1428, 1456, 1470, 1547, 1560, 1568, 1632, 1664, 1666, 1680, 1768, 1785, 1820, 1904, 1911, 1920, 1960, 2040, 2080, 2176, 2184, 2210, 2240, 2352, 2380, 2496, 2499, 2548, 2652, 2688, 2720, 2730, 2856, 2912, 2940, 3094, 3120, 3136, 3185, 3264, 3315, 3332, 3360, 3536, 3570, 3640, 3808, 3822, 3920, 4080, 4160, 4165, 4368, 4420, 4480, 4641, 4704, 4760, 4992, 4998, 5096, 5304, 5440, 5460, 5712, 5824, 5880, 6188, 6240, 6272, 6370, 6528, 6630, 6664, 6720, 7072, 7140, 7280, 7616, 7644, 7735, 7840, 8160, 8320, 8330, 8736, 8840, 9282, 9408, 9520, 9555, 9996, 10192, 10608, 10829, 10880, 10920, 11424, 11648, 11760, 12376, 12480, 12495, 12740, 13260, 13328, 13440, 14144, 14280, 14560, 15232, 15288, 15470, 15680, 16320, 16660, 17472, 17680, 18564, 18816, 19040, 19110, 19992, 20384, 21216, 21658, 21840, 22848, 23205, 23520, 24752, 24960, 24990, 25480, 26520, 26656, 28288, 28560, 29120, 30576, 30940, 31360, 32487, 32640, 33320, 34944, 35360, 37128, 38080, 38220, 39984, 40768, 42432, 43316, 43680, 45696, 46410, 47040, 49504, 49980, 50960, 53040, 53312, 54145, 57120, 58240, 61152, 61880, 64974, 66640, 70720, 74256, 76160, 76440, 79968, 81536, 84864, 86632, 87360, 92820, 94080, 99008, 99960, 101920, 106080, 106624, 108290, 114240, 122304, 123760, 129948, 133280, 141440, 148512, 152880, 159936, 162435, 173264, 174720, 185640, 198016, 199920, 203840, 212160, 216580, 228480, 244608, 247520, 259896, 266560, 297024, 305760, 319872, 324870, 346528, 371280, 399840, 407680, 424320, 433160, 495040, 519792, 533120, 594048, 611520, 649740, 693056, 742560, 799680, 866320, 990080, 1039584, 1223040, 1299480, 1386112, 1485120, 1599360, 1732640, 2079168, 2598960, 2970240, 3465280, 4158336, 5197920, 6930560, 10395840, 20791680]

約数ペア:

[(1, 20791680), (2, 10395840), (3, 6930560), (4, 5197920), (5, 4158336), (6, 3465280), (7, 2970240), (8, 2598960), (10, 2079168), (12, 1732640), (13, 1599360), (14, 1485120), (15, 1386112), (16, 1299480), (17, 1223040), (20, 1039584), (21, 990080), (24, 866320), (26, 799680), (28, 742560), (30, 693056), (32, 649740), (34, 611520), (35, 594048), (39, 533120), (40, 519792), (42, 495040), (48, 433160), (49, 424320), (51, 407680), (52, 399840), (56, 371280), (60, 346528), (64, 324870), (65, 319872), (68, 305760), (70, 297024), (78, 266560), (80, 259896), (84, 247520), (85, 244608), (91, 228480), (96, 216580), (98, 212160), (102, 203840), (104, 199920), (105, 198016), (112, 185640), (119, 174720), (120, 173264), (128, 162435), (130, 159936), (136, 152880), (140, 148512), (147, 141440), (156, 133280), (160, 129948), (168, 123760), (170, 122304), (182, 114240), (192, 108290), (195, 106624), (196, 106080), (204, 101920), (208, 99960), (210, 99008), (221, 94080), (224, 92820), (238, 87360), (240, 86632), (245, 84864), (255, 81536), (260, 79968), (272, 76440), (273, 76160), (280, 74256), (294, 70720), (312, 66640), (320, 64974), (336, 61880), (340, 61152), (357, 58240), (364, 57120), (384, 54145), (390, 53312), (392, 53040), (408, 50960), (416, 49980), (420, 49504), (442, 47040), (448, 46410), (455, 45696), (476, 43680), (480, 43316), (490, 42432), (510, 40768), (520, 39984), (544, 38220), (546, 38080), (560, 37128), (588, 35360), (595, 34944), (624, 33320), (637, 32640), (640, 32487), (663, 31360), (672, 30940), (680, 30576), (714, 29120), (728, 28560), (735, 28288), (780, 26656), (784, 26520), (816, 25480), (832, 24990), (833, 24960), (840, 24752), (884, 23520), (896, 23205), (910, 22848), (952, 21840), (960, 21658), (980, 21216), (1020, 20384), (1040, 19992), (1088, 19110), (1092, 19040), (1105, 18816), (1120, 18564), (1176, 17680), (1190, 17472), (1248, 16660), (1274, 16320), (1326, 15680), (1344, 15470), (1360, 15288), (1365, 15232), (1428, 14560), (1456, 14280), (1470, 14144), (1547, 13440), (1560, 13328), (1568, 13260), (1632, 12740), (1664, 12495), (1666, 12480), (1680, 12376), (1768, 11760), (1785, 11648), (1820, 11424), (1904, 10920), (1911, 10880), (1920, 10829), (1960, 10608), (2040, 10192), (2080, 9996), (2176, 9555), (2184, 9520), (2210, 9408), (2240, 9282), (2352, 8840), (2380, 8736), (2496, 8330), (2499, 8320), (2548, 8160), (2652, 7840), (2688, 7735), (2720, 7644), (2730, 7616), (2856, 7280), (2912, 7140), (2940, 7072), (3094, 6720), (3120, 6664), (3136, 6630), (3185, 6528), (3264, 6370), (3315, 6272), (3332, 6240), (3360, 6188), (3536, 5880), (3570, 5824), (3640, 5712), (3808, 5460), (3822, 5440), (3920, 5304), (4080, 5096), (4160, 4998), (4165, 4992), (4368, 4760), (4420, 4704), (4480, 4641)]