19900215

素因数分解:

$3^3\times 5^1\times {\mathrm{147409}}^1$

素因数の和:147423

約数の個数: 16

約数和(自身を含む): 35378400

約数和(自身を除く): 15478185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147409, 442227, 737045, 1326681, 2211135, 3980043, 6633405, 19900215]

約数ペア:

[(1, 19900215), (3, 6633405), (5, 3980043), (9, 2211135), (15, 1326681), (27, 737045), (45, 442227), (135, 147409)]