20199865

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{1091}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 28986048

約数和(自身を除く): 8786183

約数列:

[1, 5, 7, 23, 35, 115, 161, 529, 805, 1091, 2645, 3703, 5455, 7637, 18515, 25093, 38185, 125465, 175651, 577139, 878255, 2885695, 4039973, 20199865]

約数ペア:

[(1, 20199865), (5, 4039973), (7, 2885695), (23, 878255), (35, 577139), (115, 175651), (161, 125465), (529, 38185), (805, 25093), (1091, 18515), (2645, 7637), (3703, 5455)]