21761055

素因数分解:

$3^4\times 5^1\times {\mathrm{53731}}^1$

素因数の和:53748

約数の個数: 20

約数和(自身を含む): 39009432

約数和(自身を除く): 17248377

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53731, 161193, 268655, 483579, 805965, 1450737, 2417895, 4352211, 7253685, 21761055]

約数ペア:

[(1, 21761055), (3, 7253685), (5, 4352211), (9, 2417895), (15, 1450737), (27, 805965), (45, 483579), (81, 268655), (135, 161193), (405, 53731)]