821281680

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:620

約数の個数: 240

約数和(自身を含む): 2900439360

約数和(自身を除く): 2079157680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 83, 90, 108, 120, 135, 144, 162, 166, 180, 216, 240, 243, 249, 270, 324, 332, 360, 405, 415, 432, 486, 498, 509, 540, 648, 664, 720, 747, 810, 830, 972, 996, 1018, 1080, 1215, 1245, 1296, 1328, 1494, 1527, 1620, 1660, 1944, 1992, 2036, 2160, 2241, 2430, 2490, 2545, 2988, 3054, 3240, 3320, 3735, 3888, 3984, 4072, 4482, 4581, 4860, 4980, 5090, 5976, 6108, 6480, 6640, 6723, 7470, 7635, 8144, 8964, 9162, 9720, 9960, 10180, 11205, 11952, 12216, 13446, 13743, 14940, 15270, 17928, 18324, 19440, 19920, 20169, 20360, 22410, 22905, 24432, 26892, 27486, 29880, 30540, 33615, 35856, 36648, 40338, 40720, 41229, 42247, 44820, 45810, 53784, 54972, 59760, 61080, 67230, 68715, 73296, 80676, 82458, 84494, 89640, 91620, 100845, 107568, 109944, 122160, 123687, 126741, 134460, 137430, 161352, 164916, 168988, 179280, 183240, 201690, 206145, 211235, 219888, 247374, 253482, 268920, 274860, 322704, 329832, 337976, 366480, 380223, 403380, 412290, 422470, 494748, 506964, 537840, 549720, 618435, 633705, 659664, 675952, 760446, 806760, 824580, 844940, 989496, 1013928, 1099440, 1140669, 1236870, 1267410, 1520892, 1613520, 1649160, 1689880, 1901115, 1978992, 2027856, 2281338, 2473740, 2534820, 3041784, 3298320, 3379760, 3422007, 3802230, 4562676, 4947480, 5069640, 5703345, 6083568, 6844014, 7604460, 9125352, 9894960, 10139280, 10266021, 11406690, 13688028, 15208920, 17110035, 18250704, 20532042, 22813380, 27376056, 30417840, 34220070, 41064084, 45626760, 51330105, 54752112, 68440140, 82128168, 91253520, 102660210, 136880280, 164256336, 205320420, 273760560, 410640840, 821281680]

約数ペア:

[(1, 821281680), (2, 410640840), (3, 273760560), (4, 205320420), (5, 164256336), (6, 136880280), (8, 102660210), (9, 91253520), (10, 82128168), (12, 68440140), (15, 54752112), (16, 51330105), (18, 45626760), (20, 41064084), (24, 34220070), (27, 30417840), (30, 27376056), (36, 22813380), (40, 20532042), (45, 18250704), (48, 17110035), (54, 15208920), (60, 13688028), (72, 11406690), (80, 10266021), (81, 10139280), (83, 9894960), (90, 9125352), (108, 7604460), (120, 6844014), (135, 6083568), (144, 5703345), (162, 5069640), (166, 4947480), (180, 4562676), (216, 3802230), (240, 3422007), (243, 3379760), (249, 3298320), (270, 3041784), (324, 2534820), (332, 2473740), (360, 2281338), (405, 2027856), (415, 1978992), (432, 1901115), (486, 1689880), (498, 1649160), (509, 1613520), (540, 1520892), (648, 1267410), (664, 1236870), (720, 1140669), (747, 1099440), (810, 1013928), (830, 989496), (972, 844940), (996, 824580), (1018, 806760), (1080, 760446), (1215, 675952), (1245, 659664), (1296, 633705), (1328, 618435), (1494, 549720), (1527, 537840), (1620, 506964), (1660, 494748), (1944, 422470), (1992, 412290), (2036, 403380), (2160, 380223), (2241, 366480), (2430, 337976), (2490, 329832), (2545, 322704), (2988, 274860), (3054, 268920), (3240, 253482), (3320, 247374), (3735, 219888), (3888, 211235), (3984, 206145), (4072, 201690), (4482, 183240), (4581, 179280), (4860, 168988), (4980, 164916), (5090, 161352), (5976, 137430), (6108, 134460), (6480, 126741), (6640, 123687), (6723, 122160), (7470, 109944), (7635, 107568), (8144, 100845), (8964, 91620), (9162, 89640), (9720, 84494), (9960, 82458), (10180, 80676), (11205, 73296), (11952, 68715), (12216, 67230), (13446, 61080), (13743, 59760), (14940, 54972), (15270, 53784), (17928, 45810), (18324, 44820), (19440, 42247), (19920, 41229), (20169, 40720), (20360, 40338), (22410, 36648), (22905, 35856), (24432, 33615), (26892, 30540), (27486, 29880)]