81306240

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 256

約数和(自身を含む): 285534720

約数和(自身を除く): 204228480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 47, 48, 51, 53, 60, 64, 68, 80, 85, 94, 96, 102, 106, 120, 128, 136, 141, 159, 160, 170, 188, 192, 204, 212, 235, 240, 255, 265, 272, 282, 318, 320, 340, 376, 384, 408, 424, 470, 480, 510, 530, 544, 564, 636, 640, 680, 705, 752, 795, 799, 816, 848, 901, 940, 960, 1020, 1060, 1088, 1128, 1272, 1360, 1410, 1504, 1590, 1598, 1632, 1696, 1802, 1880, 1920, 2040, 2120, 2176, 2256, 2397, 2491, 2544, 2703, 2720, 2820, 3008, 3180, 3196, 3264, 3392, 3604, 3760, 3995, 4080, 4240, 4505, 4512, 4794, 4982, 5088, 5406, 5440, 5640, 6016, 6360, 6392, 6528, 6784, 7208, 7473, 7520, 7990, 8160, 8480, 9010, 9024, 9588, 9964, 10176, 10812, 10880, 11280, 11985, 12455, 12720, 12784, 13515, 14416, 14946, 15040, 15980, 16320, 16960, 18020, 18048, 19176, 19928, 20352, 21624, 22560, 23970, 24910, 25440, 25568, 27030, 28832, 29892, 30080, 31960, 32640, 33920, 36040, 37365, 38352, 39856, 42347, 43248, 45120, 47940, 49820, 50880, 51136, 54060, 57664, 59784, 63920, 72080, 74730, 76704, 79712, 84694, 86496, 90240, 95880, 99640, 101760, 102272, 108120, 115328, 119568, 127041, 127840, 144160, 149460, 153408, 159424, 169388, 172992, 191760, 199280, 211735, 216240, 239136, 254082, 255680, 288320, 298920, 306816, 318848, 338776, 345984, 383520, 398560, 423470, 432480, 478272, 508164, 511360, 576640, 597840, 635205, 677552, 767040, 797120, 846940, 864960, 956544, 1016328, 1195680, 1270410, 1355104, 1534080, 1594240, 1693880, 1729920, 2032656, 2391360, 2540820, 2710208, 3387760, 4065312, 4782720, 5081640, 5420416, 6775520, 8130624, 10163280, 13551040, 16261248, 20326560, 27102080, 40653120, 81306240]

約数ペア:

[(1, 81306240), (2, 40653120), (3, 27102080), (4, 20326560), (5, 16261248), (6, 13551040), (8, 10163280), (10, 8130624), (12, 6775520), (15, 5420416), (16, 5081640), (17, 4782720), (20, 4065312), (24, 3387760), (30, 2710208), (32, 2540820), (34, 2391360), (40, 2032656), (47, 1729920), (48, 1693880), (51, 1594240), (53, 1534080), (60, 1355104), (64, 1270410), (68, 1195680), (80, 1016328), (85, 956544), (94, 864960), (96, 846940), (102, 797120), (106, 767040), (120, 677552), (128, 635205), (136, 597840), (141, 576640), (159, 511360), (160, 508164), (170, 478272), (188, 432480), (192, 423470), (204, 398560), (212, 383520), (235, 345984), (240, 338776), (255, 318848), (265, 306816), (272, 298920), (282, 288320), (318, 255680), (320, 254082), (340, 239136), (376, 216240), (384, 211735), (408, 199280), (424, 191760), (470, 172992), (480, 169388), (510, 159424), (530, 153408), (544, 149460), (564, 144160), (636, 127840), (640, 127041), (680, 119568), (705, 115328), (752, 108120), (795, 102272), (799, 101760), (816, 99640), (848, 95880), (901, 90240), (940, 86496), (960, 84694), (1020, 79712), (1060, 76704), (1088, 74730), (1128, 72080), (1272, 63920), (1360, 59784), (1410, 57664), (1504, 54060), (1590, 51136), (1598, 50880), (1632, 49820), (1696, 47940), (1802, 45120), (1880, 43248), (1920, 42347), (2040, 39856), (2120, 38352), (2176, 37365), (2256, 36040), (2397, 33920), (2491, 32640), (2544, 31960), (2703, 30080), (2720, 29892), (2820, 28832), (3008, 27030), (3180, 25568), (3196, 25440), (3264, 24910), (3392, 23970), (3604, 22560), (3760, 21624), (3995, 20352), (4080, 19928), (4240, 19176), (4505, 18048), (4512, 18020), (4794, 16960), (4982, 16320), (5088, 15980), (5406, 15040), (5440, 14946), (5640, 14416), (6016, 13515), (6360, 12784), (6392, 12720), (6528, 12455), (6784, 11985), (7208, 11280), (7473, 10880), (7520, 10812), (7990, 10176), (8160, 9964), (8480, 9588), (9010, 9024)]