281816640

素因数分解:

$2^6\times 3^2\times 5^1\times 7^2\times {\mathrm{1997}}^1$

素因数の和:2034

約数の個数: 252

約数和(自身を含む): 1128154716

約数和(自身を除く): 846338076

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 192, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 320, 336, 360, 392, 420, 441, 448, 480, 490, 504, 560, 576, 588, 630, 672, 720, 735, 784, 840, 882, 960, 980, 1008, 1120, 1176, 1260, 1344, 1440, 1470, 1568, 1680, 1764, 1960, 1997, 2016, 2205, 2240, 2352, 2520, 2880, 2940, 3136, 3360, 3528, 3920, 3994, 4032, 4410, 4704, 5040, 5880, 5991, 6720, 7056, 7840, 7988, 8820, 9408, 9985, 10080, 11760, 11982, 13979, 14112, 15680, 15976, 17640, 17973, 19970, 20160, 23520, 23964, 27958, 28224, 29955, 31952, 35280, 35946, 39940, 41937, 47040, 47928, 55916, 59910, 63904, 69895, 70560, 71892, 79880, 83874, 89865, 95856, 97853, 111832, 119820, 125811, 127808, 139790, 141120, 143784, 159760, 167748, 179730, 191712, 195706, 209685, 223664, 239640, 251622, 279580, 287568, 293559, 319520, 335496, 359460, 383424, 391412, 419370, 447328, 479280, 489265, 503244, 559160, 575136, 587118, 629055, 639040, 670992, 718920, 782824, 838740, 880677, 894656, 958560, 978530, 1006488, 1118320, 1150272, 1174236, 1258110, 1341984, 1437840, 1467795, 1565648, 1677480, 1761354, 1917120, 1957060, 2012976, 2236640, 2348472, 2516220, 2683968, 2875680, 2935590, 3131296, 3354960, 3522708, 3914120, 4025952, 4403385, 4473280, 4696944, 5032440, 5751360, 5871180, 6262592, 6709920, 7045416, 7828240, 8051904, 8806770, 9393888, 10064880, 11742360, 13419840, 14090832, 15656480, 17613540, 18787776, 20129760, 23484720, 28181664, 31312960, 35227080, 40259520, 46969440, 56363328, 70454160, 93938880, 140908320, 281816640]

約数ペア:

[(1, 281816640), (2, 140908320), (3, 93938880), (4, 70454160), (5, 56363328), (6, 46969440), (7, 40259520), (8, 35227080), (9, 31312960), (10, 28181664), (12, 23484720), (14, 20129760), (15, 18787776), (16, 17613540), (18, 15656480), (20, 14090832), (21, 13419840), (24, 11742360), (28, 10064880), (30, 9393888), (32, 8806770), (35, 8051904), (36, 7828240), (40, 7045416), (42, 6709920), (45, 6262592), (48, 5871180), (49, 5751360), (56, 5032440), (60, 4696944), (63, 4473280), (64, 4403385), (70, 4025952), (72, 3914120), (80, 3522708), (84, 3354960), (90, 3131296), (96, 2935590), (98, 2875680), (105, 2683968), (112, 2516220), (120, 2348472), (126, 2236640), (140, 2012976), (144, 1957060), (147, 1917120), (160, 1761354), (168, 1677480), (180, 1565648), (192, 1467795), (196, 1437840), (210, 1341984), (224, 1258110), (240, 1174236), (245, 1150272), (252, 1118320), (280, 1006488), (288, 978530), (294, 958560), (315, 894656), (320, 880677), (336, 838740), (360, 782824), (392, 718920), (420, 670992), (441, 639040), (448, 629055), (480, 587118), (490, 575136), (504, 559160), (560, 503244), (576, 489265), (588, 479280), (630, 447328), (672, 419370), (720, 391412), (735, 383424), (784, 359460), (840, 335496), (882, 319520), (960, 293559), (980, 287568), (1008, 279580), (1120, 251622), (1176, 239640), (1260, 223664), (1344, 209685), (1440, 195706), (1470, 191712), (1568, 179730), (1680, 167748), (1764, 159760), (1960, 143784), (1997, 141120), (2016, 139790), (2205, 127808), (2240, 125811), (2352, 119820), (2520, 111832), (2880, 97853), (2940, 95856), (3136, 89865), (3360, 83874), (3528, 79880), (3920, 71892), (3994, 70560), (4032, 69895), (4410, 63904), (4704, 59910), (5040, 55916), (5880, 47928), (5991, 47040), (6720, 41937), (7056, 39940), (7840, 35946), (7988, 35280), (8820, 31952), (9408, 29955), (9985, 28224), (10080, 27958), (11760, 23964), (11982, 23520), (13979, 20160), (14112, 19970), (15680, 17973), (15976, 17640)]