257580720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{991}}^1$

素因数の和:1048

約数の個数: 180

約数和(自身を含む): 913887936

約数和(自身を除く): 656307216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 361, 380, 456, 570, 684, 720, 722, 760, 855, 912, 991, 1083, 1140, 1368, 1444, 1520, 1710, 1805, 1982, 2166, 2280, 2736, 2888, 2973, 3249, 3420, 3610, 3964, 4332, 4560, 4955, 5415, 5776, 5946, 6498, 6840, 7220, 7928, 8664, 8919, 9910, 10830, 11892, 12996, 13680, 14440, 14865, 15856, 16245, 17328, 17838, 18829, 19820, 21660, 23784, 25992, 28880, 29730, 32490, 35676, 37658, 39640, 43320, 44595, 47568, 51984, 56487, 59460, 64980, 71352, 75316, 79280, 86640, 89190, 94145, 112974, 118920, 129960, 142704, 150632, 169461, 178380, 188290, 225948, 237840, 259920, 282435, 301264, 338922, 356760, 357751, 376580, 451896, 564870, 677844, 713520, 715502, 753160, 847305, 903792, 1073253, 1129740, 1355688, 1431004, 1506320, 1694610, 1788755, 2146506, 2259480, 2711376, 2862008, 3219759, 3389220, 3577510, 4293012, 4518960, 5366265, 5724016, 6439518, 6778440, 7155020, 8586024, 10732530, 12879036, 13556880, 14310040, 16098795, 17172048, 21465060, 25758072, 28620080, 32197590, 42930120, 51516144, 64395180, 85860240, 128790360, 257580720]

約数ペア:

[(1, 257580720), (2, 128790360), (3, 85860240), (4, 64395180), (5, 51516144), (6, 42930120), (8, 32197590), (9, 28620080), (10, 25758072), (12, 21465060), (15, 17172048), (16, 16098795), (18, 14310040), (19, 13556880), (20, 12879036), (24, 10732530), (30, 8586024), (36, 7155020), (38, 6778440), (40, 6439518), (45, 5724016), (48, 5366265), (57, 4518960), (60, 4293012), (72, 3577510), (76, 3389220), (80, 3219759), (90, 2862008), (95, 2711376), (114, 2259480), (120, 2146506), (144, 1788755), (152, 1694610), (171, 1506320), (180, 1431004), (190, 1355688), (228, 1129740), (240, 1073253), (285, 903792), (304, 847305), (342, 753160), (360, 715502), (361, 713520), (380, 677844), (456, 564870), (570, 451896), (684, 376580), (720, 357751), (722, 356760), (760, 338922), (855, 301264), (912, 282435), (991, 259920), (1083, 237840), (1140, 225948), (1368, 188290), (1444, 178380), (1520, 169461), (1710, 150632), (1805, 142704), (1982, 129960), (2166, 118920), (2280, 112974), (2736, 94145), (2888, 89190), (2973, 86640), (3249, 79280), (3420, 75316), (3610, 71352), (3964, 64980), (4332, 59460), (4560, 56487), (4955, 51984), (5415, 47568), (5776, 44595), (5946, 43320), (6498, 39640), (6840, 37658), (7220, 35676), (7928, 32490), (8664, 29730), (8919, 28880), (9910, 25992), (10830, 23784), (11892, 21660), (12996, 19820), (13680, 18829), (14440, 17838), (14865, 17328), (15856, 16245)]