388655253

素因数分解:

$3^4\times 7^1\times {\mathrm{685459}}^1$

素因数の和:685478

約数の個数: 20

約数和(自身を含む): 663525280

約数和(自身を除く): 274870027

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 685459, 2056377, 4798213, 6169131, 14394639, 18507393, 43183917, 55522179, 129551751, 388655253]

約数ペア:

[(1, 388655253), (3, 129551751), (7, 55522179), (9, 43183917), (21, 18507393), (27, 14394639), (63, 6169131), (81, 4798213), (189, 2056377), (567, 685459)]