18881795

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{281}}^1$

素因数の和:526

約数の個数: 16

約数和(自身を含む): 23146560

約数和(自身を除く): 4264765

約数列:

[1, 5, 89, 151, 281, 445, 755, 1405, 13439, 25009, 42431, 67195, 125045, 212155, 3776359, 18881795]

約数ペア:

[(1, 18881795), (5, 3776359), (89, 212155), (151, 125045), (281, 67195), (445, 42431), (755, 25009), (1405, 13439)]