20298320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:628

約数の個数: 80

約数和(自身を含む): 54841728

約数和(自身を除く): 34543408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 67, 70, 80, 112, 134, 140, 268, 280, 335, 469, 536, 541, 560, 670, 938, 1072, 1082, 1340, 1876, 2164, 2345, 2680, 2705, 3752, 3787, 4328, 4690, 5360, 5410, 7504, 7574, 8656, 9380, 10820, 15148, 18760, 18935, 21640, 30296, 36247, 37520, 37870, 43280, 60592, 72494, 75740, 144988, 151480, 181235, 253729, 289976, 302960, 362470, 507458, 579952, 724940, 1014916, 1268645, 1449880, 2029832, 2537290, 2899760, 4059664, 5074580, 10149160, 20298320]

約数ペア:

[(1, 20298320), (2, 10149160), (4, 5074580), (5, 4059664), (7, 2899760), (8, 2537290), (10, 2029832), (14, 1449880), (16, 1268645), (20, 1014916), (28, 724940), (35, 579952), (40, 507458), (56, 362470), (67, 302960), (70, 289976), (80, 253729), (112, 181235), (134, 151480), (140, 144988), (268, 75740), (280, 72494), (335, 60592), (469, 43280), (536, 37870), (541, 37520), (560, 36247), (670, 30296), (938, 21640), (1072, 18935), (1082, 18760), (1340, 15148), (1876, 10820), (2164, 9380), (2345, 8656), (2680, 7574), (2705, 7504), (3752, 5410), (3787, 5360), (4328, 4690)]