19857015

素因数分解:

$3^3\times 5^1\times {\mathrm{147089}}^1$

素因数の和:147103

約数の個数: 16

約数和(自身を含む): 35301600

約数和(自身を除く): 15444585

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147089, 441267, 735445, 1323801, 2206335, 3971403, 6619005, 19857015]

約数ペア:

[(1, 19857015), (3, 6619005), (5, 3971403), (9, 2206335), (15, 1323801), (27, 735445), (45, 441267), (135, 147089)]