21886443

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5749}}^1$

素因数の和:5808

約数の個数: 20

約数和(自身を含む): 33396000

約数和(自身を除く): 11509557

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5749, 17247, 51741, 155223, 270203, 465669, 810609, 2431827, 7295481, 21886443]

約数ペア:

[(1, 21886443), (3, 7295481), (9, 2431827), (27, 810609), (47, 465669), (81, 270203), (141, 155223), (423, 51741), (1269, 17247), (3807, 5749)]