81510219

素因数分解:

$3^6\times 7^1\times {\mathrm{15973}}^1$

素因数の和:15998

約数の個数: 28

約数和(自身を含む): 139676656

約数和(自身を除く): 58166437

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 15973, 47919, 111811, 143757, 335433, 431271, 1006299, 1293813, 3018897, 3881439, 9056691, 11644317, 27170073, 81510219]

約数ペア:

[(1, 81510219), (3, 27170073), (7, 11644317), (9, 9056691), (21, 3881439), (27, 3018897), (63, 1293813), (81, 1006299), (189, 431271), (243, 335433), (567, 143757), (729, 111811), (1701, 47919), (5103, 15973)]