19816725

素因数分解:

$3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1621}}^1$

素因数の和:1797

約数の個数: 24

約数和(自身を含む): 32984992

約数和(自身を除く): 13168267

約数列:

[1, 3, 5, 15, 25, 75, 163, 489, 815, 1621, 2445, 4075, 4863, 8105, 12225, 24315, 40525, 121575, 264223, 792669, 1321115, 3963345, 6605575, 19816725]

約数ペア:

[(1, 19816725), (3, 6605575), (5, 3963345), (15, 1321115), (25, 792669), (75, 264223), (163, 121575), (489, 40525), (815, 24315), (1621, 12225), (2445, 8105), (4075, 4863)]