80505040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1867}}^1$

素因数の和:1905

約数の個数: 120

約数和(自身を含む): 237654432

約数和(自身を除く): 157149392

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 560, 616, 770, 784, 880, 980, 1078, 1232, 1540, 1867, 1960, 2156, 2695, 3080, 3734, 3920, 4312, 5390, 6160, 7468, 8624, 9335, 10780, 13069, 14936, 18670, 20537, 21560, 26138, 29872, 37340, 41074, 43120, 52276, 65345, 74680, 82148, 91483, 102685, 104552, 130690, 143759, 149360, 164296, 182966, 205370, 209104, 261380, 287518, 328592, 365932, 410740, 457415, 522760, 575036, 718795, 731864, 821480, 914830, 1006313, 1045520, 1150072, 1437590, 1463728, 1642960, 1829660, 2012626, 2300144, 2875180, 3659320, 4025252, 5031565, 5750360, 7318640, 8050504, 10063130, 11500720, 16101008, 20126260, 40252520, 80505040]

約数ペア:

[(1, 80505040), (2, 40252520), (4, 20126260), (5, 16101008), (7, 11500720), (8, 10063130), (10, 8050504), (11, 7318640), (14, 5750360), (16, 5031565), (20, 4025252), (22, 3659320), (28, 2875180), (35, 2300144), (40, 2012626), (44, 1829660), (49, 1642960), (55, 1463728), (56, 1437590), (70, 1150072), (77, 1045520), (80, 1006313), (88, 914830), (98, 821480), (110, 731864), (112, 718795), (140, 575036), (154, 522760), (176, 457415), (196, 410740), (220, 365932), (245, 328592), (280, 287518), (308, 261380), (385, 209104), (392, 205370), (440, 182966), (490, 164296), (539, 149360), (560, 143759), (616, 130690), (770, 104552), (784, 102685), (880, 91483), (980, 82148), (1078, 74680), (1232, 65345), (1540, 52276), (1867, 43120), (1960, 41074), (2156, 37340), (2695, 29872), (3080, 26138), (3734, 21560), (3920, 20537), (4312, 18670), (5390, 14936), (6160, 13069), (7468, 10780), (8624, 9335)]