81261711

素因数分解:

$3^4\times {\mathrm{389}}^1\times {\mathrm{2579}}^1$

素因数の和:2980

約数の個数: 20

約数和(自身を含む): 121750200

約数和(自身を除く): 40488489

約数列:

[1, 3, 9, 27, 81, 389, 1167, 2579, 3501, 7737, 10503, 23211, 31509, 69633, 208899, 1003231, 3009693, 9029079, 27087237, 81261711]

約数ペア:

[(1, 81261711), (3, 27087237), (9, 9029079), (27, 3009693), (81, 1003231), (389, 208899), (1167, 69633), (2579, 31509), (3501, 23211), (7737, 10503)]