21898215

素因数分解:

$3^3\times 5^1\times {\mathrm{162209}}^1$

素因数の和:162223

約数の個数: 16

約数和(自身を含む): 38930400

約数和(自身を除く): 17032185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 162209, 486627, 811045, 1459881, 2433135, 4379643, 7299405, 21898215]

約数ペア:

[(1, 21898215), (3, 7299405), (5, 4379643), (9, 2433135), (15, 1459881), (27, 811045), (45, 486627), (135, 162209)]