281891280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{571}}^1$

素因数の和:626

約数の個数: 240

約数和(自身を含む): 1018809792

約数和(自身を除く): 736918512

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 102, 110, 120, 121, 132, 136, 165, 170, 176, 187, 204, 220, 240, 242, 255, 264, 272, 330, 340, 363, 374, 408, 440, 484, 510, 528, 561, 571, 605, 660, 680, 726, 748, 816, 880, 935, 968, 1020, 1122, 1142, 1210, 1320, 1360, 1452, 1496, 1713, 1815, 1870, 1936, 2040, 2057, 2244, 2284, 2420, 2640, 2805, 2855, 2904, 2992, 3426, 3630, 3740, 4080, 4114, 4488, 4568, 4840, 5610, 5710, 5808, 6171, 6281, 6852, 7260, 7480, 8228, 8565, 8976, 9136, 9680, 9707, 10285, 11220, 11420, 12342, 12562, 13704, 14520, 14960, 16456, 17130, 18843, 19414, 20570, 22440, 22840, 24684, 25124, 27408, 29040, 29121, 30855, 31405, 32912, 34260, 37686, 38828, 41140, 44880, 45680, 48535, 49368, 50248, 58242, 61710, 62810, 68520, 69091, 75372, 77656, 82280, 94215, 97070, 98736, 100496, 106777, 116484, 123420, 125620, 137040, 138182, 145605, 150744, 155312, 164560, 188430, 194140, 207273, 213554, 232968, 246840, 251240, 276364, 291210, 301488, 320331, 345455, 376860, 388280, 414546, 427108, 465936, 493680, 502480, 533885, 552728, 582420, 640662, 690910, 753720, 776560, 829092, 854216, 1036365, 1067770, 1105456, 1164840, 1174547, 1281324, 1381820, 1507440, 1601655, 1658184, 1708432, 2072730, 2135540, 2329680, 2349094, 2562648, 2763640, 3203310, 3316368, 3523641, 4145460, 4271080, 4698188, 5125296, 5527280, 5872735, 6406620, 7047282, 8290920, 8542160, 9396376, 11745470, 12813240, 14094564, 16581840, 17618205, 18792752, 23490940, 25626480, 28189128, 35236410, 46981880, 56378256, 70472820, 93963760, 140945640, 281891280]

約数ペア:

[(1, 281891280), (2, 140945640), (3, 93963760), (4, 70472820), (5, 56378256), (6, 46981880), (8, 35236410), (10, 28189128), (11, 25626480), (12, 23490940), (15, 18792752), (16, 17618205), (17, 16581840), (20, 14094564), (22, 12813240), (24, 11745470), (30, 9396376), (33, 8542160), (34, 8290920), (40, 7047282), (44, 6406620), (48, 5872735), (51, 5527280), (55, 5125296), (60, 4698188), (66, 4271080), (68, 4145460), (80, 3523641), (85, 3316368), (88, 3203310), (102, 2763640), (110, 2562648), (120, 2349094), (121, 2329680), (132, 2135540), (136, 2072730), (165, 1708432), (170, 1658184), (176, 1601655), (187, 1507440), (204, 1381820), (220, 1281324), (240, 1174547), (242, 1164840), (255, 1105456), (264, 1067770), (272, 1036365), (330, 854216), (340, 829092), (363, 776560), (374, 753720), (408, 690910), (440, 640662), (484, 582420), (510, 552728), (528, 533885), (561, 502480), (571, 493680), (605, 465936), (660, 427108), (680, 414546), (726, 388280), (748, 376860), (816, 345455), (880, 320331), (935, 301488), (968, 291210), (1020, 276364), (1122, 251240), (1142, 246840), (1210, 232968), (1320, 213554), (1360, 207273), (1452, 194140), (1496, 188430), (1713, 164560), (1815, 155312), (1870, 150744), (1936, 145605), (2040, 138182), (2057, 137040), (2244, 125620), (2284, 123420), (2420, 116484), (2640, 106777), (2805, 100496), (2855, 98736), (2904, 97070), (2992, 94215), (3426, 82280), (3630, 77656), (3740, 75372), (4080, 69091), (4114, 68520), (4488, 62810), (4568, 61710), (4840, 58242), (5610, 50248), (5710, 49368), (5808, 48535), (6171, 45680), (6281, 44880), (6852, 41140), (7260, 38828), (7480, 37686), (8228, 34260), (8565, 32912), (8976, 31405), (9136, 30855), (9680, 29121), (9707, 29040), (10285, 27408), (11220, 25124), (11420, 24684), (12342, 22840), (12562, 22440), (13704, 20570), (14520, 19414), (14960, 18843), (16456, 17130)]