21591794

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{571}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 38603136

約数和(自身を除く): 17011342

約数列:

[1, 2, 7, 14, 37, 73, 74, 146, 259, 511, 518, 571, 1022, 1142, 2701, 3997, 5402, 7994, 18907, 21127, 37814, 41683, 42254, 83366, 147889, 291781, 295778, 583562, 1542271, 3084542, 10795897, 21591794]

約数ペア:

[(1, 21591794), (2, 10795897), (7, 3084542), (14, 1542271), (37, 583562), (73, 295778), (74, 291781), (146, 147889), (259, 83366), (511, 42254), (518, 41683), (571, 37814), (1022, 21127), (1142, 18907), (2701, 7994), (3997, 5402)]