81823280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:427

約数の個数: 160

約数和(自身を含む): 244270080

約数和(自身を除く): 162446800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 80, 88, 110, 112, 140, 148, 154, 176, 185, 220, 259, 280, 296, 308, 359, 370, 385, 407, 440, 518, 560, 592, 616, 718, 740, 770, 814, 880, 1036, 1232, 1295, 1436, 1480, 1540, 1628, 1795, 2035, 2072, 2513, 2590, 2849, 2872, 2960, 3080, 3256, 3590, 3949, 4070, 4144, 5026, 5180, 5698, 5744, 6160, 6512, 7180, 7898, 8140, 10052, 10360, 11396, 12565, 13283, 14245, 14360, 15796, 16280, 19745, 20104, 20720, 22792, 25130, 26566, 27643, 28490, 28720, 31592, 32560, 39490, 40208, 45584, 50260, 53132, 55286, 56980, 63184, 66415, 78980, 92981, 100520, 106264, 110572, 113960, 132830, 138215, 146113, 157960, 185962, 201040, 212528, 221144, 227920, 265660, 276430, 292226, 315920, 371924, 442288, 464905, 531320, 552860, 584452, 730565, 743848, 929810, 1022791, 1062640, 1105720, 1168904, 1461130, 1487696, 1859620, 2045582, 2211440, 2337808, 2922260, 3719240, 4091164, 5113955, 5844520, 7438480, 8182328, 10227910, 11689040, 16364656, 20455820, 40911640, 81823280]

約数ペア:

[(1, 81823280), (2, 40911640), (4, 20455820), (5, 16364656), (7, 11689040), (8, 10227910), (10, 8182328), (11, 7438480), (14, 5844520), (16, 5113955), (20, 4091164), (22, 3719240), (28, 2922260), (35, 2337808), (37, 2211440), (40, 2045582), (44, 1859620), (55, 1487696), (56, 1461130), (70, 1168904), (74, 1105720), (77, 1062640), (80, 1022791), (88, 929810), (110, 743848), (112, 730565), (140, 584452), (148, 552860), (154, 531320), (176, 464905), (185, 442288), (220, 371924), (259, 315920), (280, 292226), (296, 276430), (308, 265660), (359, 227920), (370, 221144), (385, 212528), (407, 201040), (440, 185962), (518, 157960), (560, 146113), (592, 138215), (616, 132830), (718, 113960), (740, 110572), (770, 106264), (814, 100520), (880, 92981), (1036, 78980), (1232, 66415), (1295, 63184), (1436, 56980), (1480, 55286), (1540, 53132), (1628, 50260), (1795, 45584), (2035, 40208), (2072, 39490), (2513, 32560), (2590, 31592), (2849, 28720), (2872, 28490), (2960, 27643), (3080, 26566), (3256, 25130), (3590, 22792), (3949, 20720), (4070, 20104), (4144, 19745), (5026, 16280), (5180, 15796), (5698, 14360), (5744, 14245), (6160, 13283), (6512, 12565), (7180, 11396), (7898, 10360), (8140, 10052)]