81253480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:120

約数の個数: 256

約数和(自身を含む): 252149760

約数和(自身を除く): 170896280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 23, 28, 31, 35, 37, 40, 44, 46, 55, 56, 62, 70, 74, 77, 88, 92, 110, 115, 124, 140, 148, 154, 155, 161, 184, 185, 217, 220, 230, 248, 253, 259, 280, 296, 308, 310, 322, 341, 370, 385, 407, 434, 440, 460, 506, 518, 616, 620, 644, 682, 713, 740, 770, 805, 814, 851, 868, 920, 1012, 1036, 1085, 1147, 1240, 1265, 1288, 1295, 1364, 1426, 1480, 1540, 1610, 1628, 1702, 1705, 1736, 1771, 2024, 2035, 2072, 2170, 2294, 2387, 2530, 2590, 2728, 2849, 2852, 3080, 3220, 3256, 3404, 3410, 3542, 3565, 4070, 4255, 4340, 4588, 4774, 4991, 5060, 5180, 5698, 5704, 5735, 5957, 6440, 6808, 6820, 7084, 7130, 7843, 8029, 8140, 8510, 8680, 8855, 9176, 9361, 9548, 9982, 10120, 10360, 11396, 11470, 11914, 11935, 12617, 13640, 14168, 14245, 14260, 15686, 16058, 16280, 17020, 17710, 18722, 19096, 19964, 22792, 22940, 23828, 23870, 24955, 25234, 26381, 28490, 28520, 29785, 31372, 32116, 34040, 35420, 37444, 39215, 39928, 40145, 45880, 46805, 47656, 47740, 49910, 50468, 52762, 54901, 56980, 59570, 62744, 63085, 64232, 65527, 70840, 74888, 78430, 80290, 88319, 93610, 95480, 99820, 100936, 105524, 109802, 113960, 119140, 126170, 131054, 131905, 156860, 160580, 176638, 184667, 187220, 199640, 211048, 219604, 238280, 252340, 262108, 263810, 274505, 290191, 313720, 321160, 327635, 353276, 369334, 374440, 439208, 441595, 504680, 524216, 527620, 549010, 580382, 655270, 706552, 738668, 883190, 923335, 1055240, 1098020, 1160764, 1310540, 1450955, 1477336, 1766380, 1846670, 2031337, 2196040, 2321528, 2621080, 2901910, 3532760, 3693340, 4062674, 5803820, 7386680, 8125348, 10156685, 11607640, 16250696, 20313370, 40626740, 81253480]

約数ペア:

[(1, 81253480), (2, 40626740), (4, 20313370), (5, 16250696), (7, 11607640), (8, 10156685), (10, 8125348), (11, 7386680), (14, 5803820), (20, 4062674), (22, 3693340), (23, 3532760), (28, 2901910), (31, 2621080), (35, 2321528), (37, 2196040), (40, 2031337), (44, 1846670), (46, 1766380), (55, 1477336), (56, 1450955), (62, 1310540), (70, 1160764), (74, 1098020), (77, 1055240), (88, 923335), (92, 883190), (110, 738668), (115, 706552), (124, 655270), (140, 580382), (148, 549010), (154, 527620), (155, 524216), (161, 504680), (184, 441595), (185, 439208), (217, 374440), (220, 369334), (230, 353276), (248, 327635), (253, 321160), (259, 313720), (280, 290191), (296, 274505), (308, 263810), (310, 262108), (322, 252340), (341, 238280), (370, 219604), (385, 211048), (407, 199640), (434, 187220), (440, 184667), (460, 176638), (506, 160580), (518, 156860), (616, 131905), (620, 131054), (644, 126170), (682, 119140), (713, 113960), (740, 109802), (770, 105524), (805, 100936), (814, 99820), (851, 95480), (868, 93610), (920, 88319), (1012, 80290), (1036, 78430), (1085, 74888), (1147, 70840), (1240, 65527), (1265, 64232), (1288, 63085), (1295, 62744), (1364, 59570), (1426, 56980), (1480, 54901), (1540, 52762), (1610, 50468), (1628, 49910), (1702, 47740), (1705, 47656), (1736, 46805), (1771, 45880), (2024, 40145), (2035, 39928), (2072, 39215), (2170, 37444), (2294, 35420), (2387, 34040), (2530, 32116), (2590, 31372), (2728, 29785), (2849, 28520), (2852, 28490), (3080, 26381), (3220, 25234), (3256, 24955), (3404, 23870), (3410, 23828), (3542, 22940), (3565, 22792), (4070, 19964), (4255, 19096), (4340, 18722), (4588, 17710), (4774, 17020), (4991, 16280), (5060, 16058), (5180, 15686), (5698, 14260), (5704, 14245), (5735, 14168), (5957, 13640), (6440, 12617), (6808, 11935), (6820, 11914), (7084, 11470), (7130, 11396), (7843, 10360), (8029, 10120), (8140, 9982), (8510, 9548), (8680, 9361), (8855, 9176)]