28016807

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 36312192

約数和(自身を除く): 8295385

約数列:

[1, 7, 13, 37, 53, 91, 157, 259, 371, 481, 689, 1099, 1961, 2041, 3367, 4823, 5809, 8321, 13727, 14287, 25493, 40663, 58247, 75517, 108173, 178451, 307877, 528619, 757211, 2155139, 4002401, 28016807]

約数ペア:

[(1, 28016807), (7, 4002401), (13, 2155139), (37, 757211), (53, 528619), (91, 307877), (157, 178451), (259, 108173), (371, 75517), (481, 58247), (689, 40663), (1099, 25493), (1961, 14287), (2041, 13727), (3367, 8321), (4823, 5809)]