20405490840

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{29023}}^1$

素因数の和:29084

約数の個数: 320

約数和(自身を含む): 80914268160

約数和(自身を除く): 60508777320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 31, 35, 36, 40, 42, 45, 54, 56, 60, 62, 63, 70, 72, 81, 84, 90, 93, 105, 108, 120, 124, 126, 135, 140, 155, 162, 168, 180, 186, 189, 210, 216, 217, 248, 252, 270, 279, 280, 310, 315, 324, 360, 372, 378, 405, 420, 434, 465, 504, 540, 558, 567, 620, 630, 648, 651, 744, 756, 810, 837, 840, 868, 930, 945, 1080, 1085, 1116, 1134, 1240, 1260, 1302, 1395, 1512, 1620, 1674, 1736, 1860, 1890, 1953, 2170, 2232, 2268, 2511, 2520, 2604, 2790, 2835, 3240, 3255, 3348, 3720, 3780, 3906, 4185, 4340, 4536, 5022, 5208, 5580, 5670, 5859, 6510, 6696, 7560, 7812, 8370, 8680, 9765, 10044, 11160, 11340, 11718, 12555, 13020, 15624, 16740, 17577, 19530, 20088, 22680, 23436, 25110, 26040, 29023, 29295, 33480, 35154, 39060, 46872, 50220, 58046, 58590, 70308, 78120, 87069, 87885, 100440, 116092, 117180, 140616, 145115, 174138, 175770, 203161, 232184, 234360, 261207, 290230, 348276, 351540, 406322, 435345, 522414, 580460, 609483, 696552, 703080, 783621, 812644, 870690, 899713, 1015805, 1044828, 1160920, 1218966, 1306035, 1567242, 1625288, 1741380, 1799426, 1828449, 2031610, 2089656, 2350863, 2437932, 2612070, 2699139, 3047415, 3134484, 3482760, 3598852, 3656898, 3918105, 4063220, 4498565, 4701726, 4875864, 5224140, 5398278, 5485347, 6094830, 6268968, 6297991, 7197704, 7313796, 7836210, 8097417, 8126440, 8997130, 9142245, 9403452, 10448280, 10796556, 10970694, 11754315, 12189660, 12595982, 13495695, 14627592, 15672420, 16194834, 16456041, 17994260, 18284490, 18806904, 18893973, 21593112, 21941388, 23508630, 24292251, 24379320, 25191964, 26991390, 27426735, 31344840, 31489955, 32389668, 32912082, 35988520, 36568980, 37787946, 40487085, 43882776, 47017260, 48584502, 50383928, 53982780, 54853470, 56681919, 62979910, 64779336, 65824164, 72876753, 73137960, 75575892, 80974170, 82280205, 94034520, 94469865, 97169004, 107965560, 109706940, 113363838, 121461255, 125959820, 131648328, 145753506, 151151784, 161948340, 164560410, 170045757, 188939730, 194338008, 219413880, 226727676, 242922510, 251919640, 283409595, 291507012, 323896680, 329120820, 340091514, 364383765, 377879460, 453455352, 485845020, 510137271, 566819190, 583014024, 658241640, 680183028, 728767530, 755758920, 850228785, 971690040, 1020274542, 1133638380, 1360366056, 1457535060, 1700457570, 2040549084, 2267276760, 2550686355, 2915070120, 3400915140, 4081098168, 5101372710, 6801830280, 10202745420, 20405490840]

約数ペア:

[(1, 20405490840), (2, 10202745420), (3, 6801830280), (4, 5101372710), (5, 4081098168), (6, 3400915140), (7, 2915070120), (8, 2550686355), (9, 2267276760), (10, 2040549084), (12, 1700457570), (14, 1457535060), (15, 1360366056), (18, 1133638380), (20, 1020274542), (21, 971690040), (24, 850228785), (27, 755758920), (28, 728767530), (30, 680183028), (31, 658241640), (35, 583014024), (36, 566819190), (40, 510137271), (42, 485845020), (45, 453455352), (54, 377879460), (56, 364383765), (60, 340091514), (62, 329120820), (63, 323896680), (70, 291507012), (72, 283409595), (81, 251919640), (84, 242922510), (90, 226727676), (93, 219413880), (105, 194338008), (108, 188939730), (120, 170045757), (124, 164560410), (126, 161948340), (135, 151151784), (140, 145753506), (155, 131648328), (162, 125959820), (168, 121461255), (180, 113363838), (186, 109706940), (189, 107965560), (210, 97169004), (216, 94469865), (217, 94034520), (248, 82280205), (252, 80974170), (270, 75575892), (279, 73137960), (280, 72876753), (310, 65824164), (315, 64779336), (324, 62979910), (360, 56681919), (372, 54853470), (378, 53982780), (405, 50383928), (420, 48584502), (434, 47017260), (465, 43882776), (504, 40487085), (540, 37787946), (558, 36568980), (567, 35988520), (620, 32912082), (630, 32389668), (648, 31489955), (651, 31344840), (744, 27426735), (756, 26991390), (810, 25191964), (837, 24379320), (840, 24292251), (868, 23508630), (930, 21941388), (945, 21593112), (1080, 18893973), (1085, 18806904), (1116, 18284490), (1134, 17994260), (1240, 16456041), (1260, 16194834), (1302, 15672420), (1395, 14627592), (1512, 13495695), (1620, 12595982), (1674, 12189660), (1736, 11754315), (1860, 10970694), (1890, 10796556), (1953, 10448280), (2170, 9403452), (2232, 9142245), (2268, 8997130), (2511, 8126440), (2520, 8097417), (2604, 7836210), (2790, 7313796), (2835, 7197704), (3240, 6297991), (3255, 6268968), (3348, 6094830), (3720, 5485347), (3780, 5398278), (3906, 5224140), (4185, 4875864), (4340, 4701726), (4536, 4498565), (5022, 4063220), (5208, 3918105), (5580, 3656898), (5670, 3598852), (5859, 3482760), (6510, 3134484), (6696, 3047415), (7560, 2699139), (7812, 2612070), (8370, 2437932), (8680, 2350863), (9765, 2089656), (10044, 2031610), (11160, 1828449), (11340, 1799426), (11718, 1741380), (12555, 1625288), (13020, 1567242), (15624, 1306035), (16740, 1218966), (17577, 1160920), (19530, 1044828), (20088, 1015805), (22680, 899713), (23436, 870690), (25110, 812644), (26040, 783621), (29023, 703080), (29295, 696552), (33480, 609483), (35154, 580460), (39060, 522414), (46872, 435345), (50220, 406322), (58046, 351540), (58590, 348276), (70308, 290230), (78120, 261207), (87069, 234360), (87885, 232184), (100440, 203161), (116092, 175770), (117180, 174138), (140616, 145115)]