20528144

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{613}}^1$

素因数の和:664

約数の個数: 80

約数和(自身を含む): 51163392

約数和(自身を除く): 30635248

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 23, 26, 28, 46, 52, 56, 91, 92, 104, 112, 161, 182, 184, 208, 299, 322, 364, 368, 598, 613, 644, 728, 1196, 1226, 1288, 1456, 2093, 2392, 2452, 2576, 4186, 4291, 4784, 4904, 7969, 8372, 8582, 9808, 14099, 15938, 16744, 17164, 28198, 31876, 33488, 34328, 55783, 56396, 63752, 68656, 98693, 111566, 112792, 127504, 183287, 197386, 223132, 225584, 366574, 394772, 446264, 733148, 789544, 892528, 1283009, 1466296, 1579088, 2566018, 2932592, 5132036, 10264072, 20528144]

約数ペア:

[(1, 20528144), (2, 10264072), (4, 5132036), (7, 2932592), (8, 2566018), (13, 1579088), (14, 1466296), (16, 1283009), (23, 892528), (26, 789544), (28, 733148), (46, 446264), (52, 394772), (56, 366574), (91, 225584), (92, 223132), (104, 197386), (112, 183287), (161, 127504), (182, 112792), (184, 111566), (208, 98693), (299, 68656), (322, 63752), (364, 56396), (368, 55783), (598, 34328), (613, 33488), (644, 31876), (728, 28198), (1196, 17164), (1226, 16744), (1288, 15938), (1456, 14099), (2093, 9808), (2392, 8582), (2452, 8372), (2576, 7969), (4186, 4904), (4291, 4784)]