18887945

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 24460296

約数和(自身を除く): 5572351

約数列:

[1, 5, 23, 37, 115, 185, 193, 529, 851, 965, 2645, 4255, 4439, 7141, 19573, 22195, 35705, 97865, 102097, 164243, 510485, 821215, 3777589, 18887945]

約数ペア:

[(1, 18887945), (5, 3777589), (23, 821215), (37, 510485), (115, 164243), (185, 102097), (193, 97865), (529, 35705), (851, 22195), (965, 19573), (2645, 7141), (4255, 4439)]