81999215

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{8363}}^1$

素因数の和:8458

約数の個数: 16

約数和(自身を含む): 102977568

約数和(自身を除く): 20978353

約数列:

[1, 5, 37, 53, 185, 265, 1961, 8363, 9805, 41815, 309431, 443239, 1547155, 2216195, 16399843, 81999215]

約数ペア:

[(1, 81999215), (5, 16399843), (37, 2216195), (53, 1547155), (185, 443239), (265, 309431), (1961, 41815), (8363, 9805)]