20420605

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 25066800

約数和(自身を除く): 4646195

約数列:

[1, 5, 89, 109, 421, 445, 545, 2105, 9701, 37469, 45889, 48505, 187345, 229445, 4084121, 20420605]

約数ペア:

[(1, 20420605), (5, 4084121), (89, 229445), (109, 187345), (421, 48505), (445, 45889), (545, 37469), (2105, 9701)]