19800225

素因数分解:

$3^2\times 5^2\times {\mathrm{88001}}^1$

素因数の和:88017

約数の個数: 18

約数和(自身を含む): 35464806

約数和(自身を除く): 15664581

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 88001, 264003, 440005, 792009, 1320015, 2200025, 3960045, 6600075, 19800225]

約数ペア:

[(1, 19800225), (3, 6600075), (5, 3960045), (9, 2200025), (15, 1320015), (25, 792009), (45, 440005), (75, 264003), (225, 88001)]