21990234

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{523577}}^1$

素因数の和:523589

約数の個数: 16

約数和(自身を含む): 50263488

約数和(自身を除く): 28273254

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 523577, 1047154, 1570731, 3141462, 3665039, 7330078, 10995117, 21990234]

約数ペア:

[(1, 21990234), (2, 10995117), (3, 7330078), (6, 3665039), (7, 3141462), (14, 1570731), (21, 1047154), (42, 523577)]