18225225

素因数分解:

$3^2\times 5^2\times {\mathrm{81001}}^1$

素因数の和:81017

約数の個数: 18

約数和(自身を含む): 32643806

約数和(自身を除く): 14418581

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 81001, 243003, 405005, 729009, 1215015, 2025025, 3645045, 6075075, 18225225]

約数ペア:

[(1, 18225225), (3, 6075075), (5, 3645045), (9, 2025025), (15, 1215015), (25, 729009), (45, 405005), (75, 243003), (225, 81001)]