1638405720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1801}}^1$

素因数の和:1863

約数の個数: 288

約数和(自身を含む): 6426220320

約数和(自身を除く): 4787814600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 114, 120, 126, 133, 140, 152, 168, 171, 180, 190, 210, 228, 252, 266, 280, 285, 315, 342, 360, 361, 380, 399, 420, 456, 504, 532, 570, 630, 665, 684, 722, 760, 798, 840, 855, 1064, 1083, 1140, 1197, 1260, 1330, 1368, 1444, 1596, 1710, 1801, 1805, 1995, 2166, 2280, 2394, 2520, 2527, 2660, 2888, 3192, 3249, 3420, 3602, 3610, 3990, 4332, 4788, 5054, 5320, 5403, 5415, 5985, 6498, 6840, 7204, 7220, 7581, 7980, 8664, 9005, 9576, 10108, 10806, 10830, 11970, 12607, 12635, 12996, 14408, 14440, 15162, 15960, 16209, 16245, 18010, 20216, 21612, 21660, 22743, 23940, 25214, 25270, 25992, 27015, 30324, 32418, 32490, 34219, 36020, 37821, 37905, 43224, 43320, 45486, 47880, 50428, 50540, 54030, 60648, 63035, 64836, 64980, 68438, 72040, 75642, 75810, 81045, 90972, 100856, 101080, 102657, 108060, 113463, 113715, 126070, 129672, 129960, 136876, 151284, 151620, 162090, 171095, 181944, 189105, 205314, 216120, 226926, 227430, 239533, 252140, 273752, 302568, 303240, 307971, 324180, 342190, 378210, 410628, 453852, 454860, 479066, 504280, 513285, 567315, 615942, 648360, 650161, 684380, 718599, 756420, 821256, 907704, 909720, 958132, 1026570, 1134630, 1197665, 1231884, 1300322, 1368760, 1437198, 1512840, 1539855, 1916264, 1950483, 2053140, 2155797, 2269260, 2395330, 2463768, 2600644, 2874396, 3079710, 3250805, 3592995, 3900966, 4106280, 4311594, 4538520, 4551127, 4790660, 5201288, 5748792, 5851449, 6159420, 6501610, 7185990, 7801932, 8623188, 9102254, 9581320, 9752415, 10778985, 11702898, 12318840, 13003220, 13653381, 14371980, 15603864, 17246376, 18204508, 19504830, 21557970, 22755635, 23405796, 26006440, 27306762, 28743960, 29257245, 36409016, 39009660, 40960143, 43115940, 45511270, 46811592, 54613524, 58514490, 68266905, 78019320, 81920286, 86231880, 91022540, 109227048, 117028980, 136533810, 163840572, 182045080, 204800715, 234057960, 273067620, 327681144, 409601430, 546135240, 819202860, 1638405720]

約数ペア:

[(1, 1638405720), (2, 819202860), (3, 546135240), (4, 409601430), (5, 327681144), (6, 273067620), (7, 234057960), (8, 204800715), (9, 182045080), (10, 163840572), (12, 136533810), (14, 117028980), (15, 109227048), (18, 91022540), (19, 86231880), (20, 81920286), (21, 78019320), (24, 68266905), (28, 58514490), (30, 54613524), (35, 46811592), (36, 45511270), (38, 43115940), (40, 40960143), (42, 39009660), (45, 36409016), (56, 29257245), (57, 28743960), (60, 27306762), (63, 26006440), (70, 23405796), (72, 22755635), (76, 21557970), (84, 19504830), (90, 18204508), (95, 17246376), (105, 15603864), (114, 14371980), (120, 13653381), (126, 13003220), (133, 12318840), (140, 11702898), (152, 10778985), (168, 9752415), (171, 9581320), (180, 9102254), (190, 8623188), (210, 7801932), (228, 7185990), (252, 6501610), (266, 6159420), (280, 5851449), (285, 5748792), (315, 5201288), (342, 4790660), (360, 4551127), (361, 4538520), (380, 4311594), (399, 4106280), (420, 3900966), (456, 3592995), (504, 3250805), (532, 3079710), (570, 2874396), (630, 2600644), (665, 2463768), (684, 2395330), (722, 2269260), (760, 2155797), (798, 2053140), (840, 1950483), (855, 1916264), (1064, 1539855), (1083, 1512840), (1140, 1437198), (1197, 1368760), (1260, 1300322), (1330, 1231884), (1368, 1197665), (1444, 1134630), (1596, 1026570), (1710, 958132), (1801, 909720), (1805, 907704), (1995, 821256), (2166, 756420), (2280, 718599), (2394, 684380), (2520, 650161), (2527, 648360), (2660, 615942), (2888, 567315), (3192, 513285), (3249, 504280), (3420, 479066), (3602, 454860), (3610, 453852), (3990, 410628), (4332, 378210), (4788, 342190), (5054, 324180), (5320, 307971), (5403, 303240), (5415, 302568), (5985, 273752), (6498, 252140), (6840, 239533), (7204, 227430), (7220, 226926), (7581, 216120), (7980, 205314), (8664, 189105), (9005, 181944), (9576, 171095), (10108, 162090), (10806, 151620), (10830, 151284), (11970, 136876), (12607, 129960), (12635, 129672), (12996, 126070), (14408, 113715), (14440, 113463), (15162, 108060), (15960, 102657), (16209, 101080), (16245, 100856), (18010, 90972), (20216, 81045), (21612, 75810), (21660, 75642), (22743, 72040), (23940, 68438), (25214, 64980), (25270, 64836), (25992, 63035), (27015, 60648), (30324, 54030), (32418, 50540), (32490, 50428), (34219, 47880), (36020, 45486), (37821, 43320), (37905, 43224)]