18971075

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 24641280

約数和(自身を除く): 5670205

約数列:

[1, 5, 25, 29, 137, 145, 191, 685, 725, 955, 3425, 3973, 4775, 5539, 19865, 26167, 27695, 99325, 130835, 138475, 654175, 758843, 3794215, 18971075]

約数ペア:

[(1, 18971075), (5, 3794215), (25, 758843), (29, 654175), (137, 138475), (145, 130835), (191, 99325), (685, 27695), (725, 26167), (955, 19865), (3425, 5539), (3973, 4775)]