81578583

素因数分解:

$3^4\times {\mathrm{191}}^1\times {\mathrm{5273}}^1$

素因数の和:5476

約数の個数: 20

約数和(自身を含む): 122525568

約数和(自身を除く): 40946985

約数列:

[1, 3, 9, 27, 81, 191, 573, 1719, 5157, 5273, 15471, 15819, 47457, 142371, 427113, 1007143, 3021429, 9064287, 27192861, 81578583]

約数ペア:

[(1, 81578583), (3, 27192861), (9, 9064287), (27, 3021429), (81, 1007143), (191, 427113), (573, 142371), (1719, 47457), (5157, 15819), (5273, 15471)]