2180025

素因数分解:

$3^2\times 5^2\times {\mathrm{9689}}^1$

素因数の和:9705

約数の個数: 18

約数和(自身を含む): 3905070

約数和(自身を除く): 1725045

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 9689, 29067, 48445, 87201, 145335, 242225, 436005, 726675, 2180025]

約数ペア:

[(1, 2180025), (3, 726675), (5, 436005), (9, 242225), (15, 145335), (25, 87201), (45, 48445), (75, 29067), (225, 9689)]