18905805

素因数分解:

$3^4\times 5^1\times {\mathrm{46681}}^1$

素因数の和:46698

約数の個数: 20

約数和(自身を含む): 33891132

約数和(自身を除く): 14985327

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 46681, 140043, 233405, 420129, 700215, 1260387, 2100645, 3781161, 6301935, 18905805]

約数ペア:

[(1, 18905805), (3, 6301935), (5, 3781161), (9, 2100645), (15, 1260387), (27, 700215), (45, 420129), (81, 233405), (135, 140043), (405, 46681)]