81211781

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{13633}}^1$

素因数の和:13700

約数の個数: 16

約数和(自身を含む): 99473664

約数和(自身を除く): 18261883

約数列:

[1, 7, 23, 37, 161, 259, 851, 5957, 13633, 95431, 313559, 504421, 2194913, 3530947, 11601683, 81211781]

約数ペア:

[(1, 81211781), (7, 11601683), (23, 3530947), (37, 2194913), (161, 504421), (259, 313559), (851, 95431), (5957, 13633)]