81219240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{479}}^1$

素因数の和:656

約数の個数: 128

約数和(自身を含む): 273024000

約数和(自身を除く): 191804760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 157, 180, 216, 270, 314, 360, 471, 479, 540, 628, 785, 942, 958, 1080, 1256, 1413, 1437, 1570, 1884, 1916, 2355, 2395, 2826, 2874, 3140, 3768, 3832, 4239, 4311, 4710, 4790, 5652, 5748, 6280, 7065, 7185, 8478, 8622, 9420, 9580, 11304, 11496, 12933, 14130, 14370, 16956, 17244, 18840, 19160, 21195, 21555, 25866, 28260, 28740, 33912, 34488, 42390, 43110, 51732, 56520, 57480, 64665, 75203, 84780, 86220, 103464, 129330, 150406, 169560, 172440, 225609, 258660, 300812, 376015, 451218, 517320, 601624, 676827, 752030, 902436, 1128045, 1353654, 1504060, 1804872, 2030481, 2256090, 2707308, 3008120, 3384135, 4060962, 4512180, 5414616, 6768270, 8121924, 9024360, 10152405, 13536540, 16243848, 20304810, 27073080, 40609620, 81219240]

約数ペア:

[(1, 81219240), (2, 40609620), (3, 27073080), (4, 20304810), (5, 16243848), (6, 13536540), (8, 10152405), (9, 9024360), (10, 8121924), (12, 6768270), (15, 5414616), (18, 4512180), (20, 4060962), (24, 3384135), (27, 3008120), (30, 2707308), (36, 2256090), (40, 2030481), (45, 1804872), (54, 1504060), (60, 1353654), (72, 1128045), (90, 902436), (108, 752030), (120, 676827), (135, 601624), (157, 517320), (180, 451218), (216, 376015), (270, 300812), (314, 258660), (360, 225609), (471, 172440), (479, 169560), (540, 150406), (628, 129330), (785, 103464), (942, 86220), (958, 84780), (1080, 75203), (1256, 64665), (1413, 57480), (1437, 56520), (1570, 51732), (1884, 43110), (1916, 42390), (2355, 34488), (2395, 33912), (2826, 28740), (2874, 28260), (3140, 25866), (3768, 21555), (3832, 21195), (4239, 19160), (4311, 18840), (4710, 17244), (4790, 16956), (5652, 14370), (5748, 14130), (6280, 12933), (7065, 11496), (7185, 11304), (8478, 9580), (8622, 9420)]