20293007

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 4987633

約数列:

[1, 7, 19, 49, 71, 133, 307, 497, 931, 1349, 2149, 3479, 5833, 9443, 15043, 21797, 40831, 66101, 152579, 285817, 414143, 1068053, 2899001, 20293007]

約数ペア:

[(1, 20293007), (7, 2899001), (19, 1068053), (49, 414143), (71, 285817), (133, 152579), (307, 66101), (497, 40831), (931, 21797), (1349, 15043), (2149, 9443), (3479, 5833)]