31999781

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 38304000

約数和(自身を除く): 6304219

約数列:

[1, 11, 19, 31, 121, 209, 341, 449, 589, 2299, 3751, 4939, 6479, 8531, 13919, 54329, 71269, 93841, 153109, 264461, 1032251, 1684199, 2909071, 31999781]

約数ペア:

[(1, 31999781), (11, 2909071), (19, 1684199), (31, 1032251), (121, 264461), (209, 153109), (341, 93841), (449, 71269), (589, 54329), (2299, 13919), (3751, 8531), (4939, 6479)]