81709320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 256

約数和(自身を含む): 315187200

約数和(自身を除く): 233477880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 37, 40, 42, 44, 55, 56, 60, 66, 70, 74, 77, 84, 88, 105, 110, 111, 120, 132, 140, 148, 154, 165, 168, 185, 210, 220, 222, 231, 239, 259, 264, 280, 296, 308, 330, 370, 385, 407, 420, 440, 444, 462, 478, 518, 555, 616, 660, 717, 740, 770, 777, 814, 840, 888, 924, 956, 1036, 1110, 1155, 1195, 1221, 1295, 1320, 1434, 1480, 1540, 1554, 1628, 1673, 1848, 1912, 2035, 2072, 2220, 2310, 2390, 2442, 2590, 2629, 2849, 2868, 3080, 3108, 3256, 3346, 3585, 3885, 4070, 4440, 4620, 4780, 4884, 5019, 5180, 5258, 5698, 5736, 6105, 6216, 6692, 7170, 7770, 7887, 8140, 8365, 8547, 8843, 9240, 9560, 9768, 10038, 10360, 10516, 11396, 12210, 13145, 13384, 14245, 14340, 15540, 15774, 16280, 16730, 17094, 17686, 18403, 20076, 21032, 22792, 24420, 25095, 26290, 26529, 28490, 28680, 31080, 31548, 33460, 34188, 35372, 36806, 39435, 40152, 42735, 44215, 48840, 50190, 52580, 53058, 55209, 56980, 61901, 63096, 66920, 68376, 70744, 73612, 78870, 85470, 88430, 92015, 97273, 100380, 105160, 106116, 110418, 113960, 123802, 132645, 147224, 157740, 170940, 176860, 184030, 185703, 194546, 200760, 212232, 220836, 247604, 265290, 276045, 291819, 309505, 315480, 341880, 353720, 368060, 371406, 389092, 441672, 486365, 495208, 530580, 552090, 583638, 619010, 680911, 736120, 742812, 778184, 928515, 972730, 1061160, 1104180, 1167276, 1238020, 1361822, 1459095, 1485624, 1857030, 1945460, 2042733, 2208360, 2334552, 2476040, 2723644, 2918190, 3404555, 3714060, 3890920, 4085466, 5447288, 5836380, 6809110, 7428120, 8170932, 10213665, 11672760, 13618220, 16341864, 20427330, 27236440, 40854660, 81709320]

約数ペア:

[(1, 81709320), (2, 40854660), (3, 27236440), (4, 20427330), (5, 16341864), (6, 13618220), (7, 11672760), (8, 10213665), (10, 8170932), (11, 7428120), (12, 6809110), (14, 5836380), (15, 5447288), (20, 4085466), (21, 3890920), (22, 3714060), (24, 3404555), (28, 2918190), (30, 2723644), (33, 2476040), (35, 2334552), (37, 2208360), (40, 2042733), (42, 1945460), (44, 1857030), (55, 1485624), (56, 1459095), (60, 1361822), (66, 1238020), (70, 1167276), (74, 1104180), (77, 1061160), (84, 972730), (88, 928515), (105, 778184), (110, 742812), (111, 736120), (120, 680911), (132, 619010), (140, 583638), (148, 552090), (154, 530580), (165, 495208), (168, 486365), (185, 441672), (210, 389092), (220, 371406), (222, 368060), (231, 353720), (239, 341880), (259, 315480), (264, 309505), (280, 291819), (296, 276045), (308, 265290), (330, 247604), (370, 220836), (385, 212232), (407, 200760), (420, 194546), (440, 185703), (444, 184030), (462, 176860), (478, 170940), (518, 157740), (555, 147224), (616, 132645), (660, 123802), (717, 113960), (740, 110418), (770, 106116), (777, 105160), (814, 100380), (840, 97273), (888, 92015), (924, 88430), (956, 85470), (1036, 78870), (1110, 73612), (1155, 70744), (1195, 68376), (1221, 66920), (1295, 63096), (1320, 61901), (1434, 56980), (1480, 55209), (1540, 53058), (1554, 52580), (1628, 50190), (1673, 48840), (1848, 44215), (1912, 42735), (2035, 40152), (2072, 39435), (2220, 36806), (2310, 35372), (2390, 34188), (2442, 33460), (2590, 31548), (2629, 31080), (2849, 28680), (2868, 28490), (3080, 26529), (3108, 26290), (3256, 25095), (3346, 24420), (3585, 22792), (3885, 21032), (4070, 20076), (4440, 18403), (4620, 17686), (4780, 17094), (4884, 16730), (5019, 16280), (5180, 15774), (5258, 15540), (5698, 14340), (5736, 14245), (6105, 13384), (6216, 13145), (6692, 12210), (7170, 11396), (7770, 10516), (7887, 10360), (8140, 10038), (8365, 9768), (8547, 9560), (8843, 9240)]