19892900

素因数分解:

$2^2\times 5^2\times {\mathrm{198929}}^1$

素因数の和:198943

約数の個数: 18

約数和(自身を含む): 43167810

約数和(自身を除く): 23274910

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 198929, 397858, 795716, 994645, 1989290, 3978580, 4973225, 9946450, 19892900]

約数ペア:

[(1, 19892900), (2, 9946450), (4, 4973225), (5, 3978580), (10, 1989290), (20, 994645), (25, 795716), (50, 397858), (100, 198929)]