2809215

素因数分解:

$3^3\times 5^1\times {\mathrm{20809}}^1$

素因数の和:20823

約数の個数: 16

約数和(自身を含む): 4994400

約数和(自身を除く): 2185185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 20809, 62427, 104045, 187281, 312135, 561843, 936405, 2809215]

約数ペア:

[(1, 2809215), (3, 936405), (5, 561843), (9, 312135), (15, 187281), (27, 104045), (45, 62427), (135, 20809)]