81341280

素因数分解:

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

素因数の和:1034

約数の個数: 192

約数和(自身を含む): 299980800

約数和(自身を除く): 218639520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 96, 108, 114, 120, 135, 144, 152, 160, 171, 180, 190, 216, 228, 240, 270, 285, 288, 304, 342, 360, 380, 432, 456, 480, 513, 540, 570, 608, 684, 720, 760, 855, 864, 912, 991, 1026, 1080, 1140, 1368, 1440, 1520, 1710, 1824, 1982, 2052, 2160, 2280, 2565, 2736, 2973, 3040, 3420, 3964, 4104, 4320, 4560, 4955, 5130, 5472, 5946, 6840, 7928, 8208, 8919, 9120, 9910, 10260, 11892, 13680, 14865, 15856, 16416, 17838, 18829, 19820, 20520, 23784, 26757, 27360, 29730, 31712, 35676, 37658, 39640, 41040, 44595, 47568, 53514, 56487, 59460, 71352, 75316, 79280, 82080, 89190, 94145, 95136, 107028, 112974, 118920, 133785, 142704, 150632, 158560, 169461, 178380, 188290, 214056, 225948, 237840, 267570, 282435, 285408, 301264, 338922, 356760, 376580, 428112, 451896, 475680, 508383, 535140, 564870, 602528, 677844, 713520, 753160, 847305, 856224, 903792, 1016766, 1070280, 1129740, 1355688, 1427040, 1506320, 1694610, 1807584, 2033532, 2140560, 2259480, 2541915, 2711376, 3012640, 3389220, 4067064, 4281120, 4518960, 5083830, 5422752, 6778440, 8134128, 9037920, 10167660, 13556880, 16268256, 20335320, 27113760, 40670640, 81341280]

約数ペア:

[(1, 81341280), (2, 40670640), (3, 27113760), (4, 20335320), (5, 16268256), (6, 13556880), (8, 10167660), (9, 9037920), (10, 8134128), (12, 6778440), (15, 5422752), (16, 5083830), (18, 4518960), (19, 4281120), (20, 4067064), (24, 3389220), (27, 3012640), (30, 2711376), (32, 2541915), (36, 2259480), (38, 2140560), (40, 2033532), (45, 1807584), (48, 1694610), (54, 1506320), (57, 1427040), (60, 1355688), (72, 1129740), (76, 1070280), (80, 1016766), (90, 903792), (95, 856224), (96, 847305), (108, 753160), (114, 713520), (120, 677844), (135, 602528), (144, 564870), (152, 535140), (160, 508383), (171, 475680), (180, 451896), (190, 428112), (216, 376580), (228, 356760), (240, 338922), (270, 301264), (285, 285408), (288, 282435), (304, 267570), (342, 237840), (360, 225948), (380, 214056), (432, 188290), (456, 178380), (480, 169461), (513, 158560), (540, 150632), (570, 142704), (608, 133785), (684, 118920), (720, 112974), (760, 107028), (855, 95136), (864, 94145), (912, 89190), (991, 82080), (1026, 79280), (1080, 75316), (1140, 71352), (1368, 59460), (1440, 56487), (1520, 53514), (1710, 47568), (1824, 44595), (1982, 41040), (2052, 39640), (2160, 37658), (2280, 35676), (2565, 31712), (2736, 29730), (2973, 27360), (3040, 26757), (3420, 23784), (3964, 20520), (4104, 19820), (4320, 18829), (4560, 17838), (4955, 16416), (5130, 15856), (5472, 14865), (5946, 13680), (6840, 11892), (7928, 10260), (8208, 9910), (8919, 9120)]