28684040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 128

約数和(自身を含む): 82252800

約数和(自身を除く): 53568760

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 67, 70, 77, 88, 110, 134, 139, 140, 154, 220, 268, 278, 280, 308, 335, 385, 440, 469, 536, 556, 616, 670, 695, 737, 770, 938, 973, 1112, 1340, 1390, 1474, 1529, 1540, 1876, 1946, 2345, 2680, 2780, 2948, 3058, 3080, 3685, 3752, 3892, 4690, 4865, 5159, 5560, 5896, 6116, 7370, 7645, 7784, 9313, 9380, 9730, 10318, 10703, 12232, 14740, 15290, 18626, 18760, 19460, 20636, 21406, 25795, 29480, 30580, 37252, 38920, 41272, 42812, 46565, 51590, 53515, 61160, 65191, 74504, 85624, 93130, 102443, 103180, 107030, 130382, 186260, 204886, 206360, 214060, 260764, 325955, 372520, 409772, 428120, 512215, 521528, 651910, 717101, 819544, 1024430, 1303820, 1434202, 2048860, 2607640, 2868404, 3585505, 4097720, 5736808, 7171010, 14342020, 28684040]

約数ペア:

[(1, 28684040), (2, 14342020), (4, 7171010), (5, 5736808), (7, 4097720), (8, 3585505), (10, 2868404), (11, 2607640), (14, 2048860), (20, 1434202), (22, 1303820), (28, 1024430), (35, 819544), (40, 717101), (44, 651910), (55, 521528), (56, 512215), (67, 428120), (70, 409772), (77, 372520), (88, 325955), (110, 260764), (134, 214060), (139, 206360), (140, 204886), (154, 186260), (220, 130382), (268, 107030), (278, 103180), (280, 102443), (308, 93130), (335, 85624), (385, 74504), (440, 65191), (469, 61160), (536, 53515), (556, 51590), (616, 46565), (670, 42812), (695, 41272), (737, 38920), (770, 37252), (938, 30580), (973, 29480), (1112, 25795), (1340, 21406), (1390, 20636), (1474, 19460), (1529, 18760), (1540, 18626), (1876, 15290), (1946, 14740), (2345, 12232), (2680, 10703), (2780, 10318), (2948, 9730), (3058, 9380), (3080, 9313), (3685, 7784), (3752, 7645), (3892, 7370), (4690, 6116), (4865, 5896), (5159, 5560)]