21926457

素因数分解:

$3^4\times 7^1\times {\mathrm{38671}}^1$

素因数の和:38690

約数の個数: 20

約数和(自身を含む): 37434496

約数和(自身を除く): 15508039

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38671, 116013, 270697, 348039, 812091, 1044117, 2436273, 3132351, 7308819, 21926457]

約数ペア:

[(1, 21926457), (3, 7308819), (7, 3132351), (9, 2436273), (21, 1044117), (27, 812091), (63, 348039), (81, 270697), (189, 116013), (567, 38671)]