21988935

素因数分解:

$3^3\times 5^1\times {\mathrm{162881}}^1$

素因数の和:162895

約数の個数: 16

約数和(自身を含む): 39091680

約数和(自身を除く): 17102745

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 162881, 488643, 814405, 1465929, 2443215, 4397787, 7329645, 21988935]

約数ペア:

[(1, 21988935), (3, 7329645), (5, 4397787), (9, 2443215), (15, 1465929), (27, 814405), (45, 488643), (135, 162881)]