81685719

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{661}}^1$

素因数の和:892

約数の個数: 32

約数和(自身を含む): 127104000

約数和(自身を除く): 45418281

約数列:

[1, 3, 9, 23, 27, 69, 199, 207, 597, 621, 661, 1791, 1983, 4577, 5373, 5949, 13731, 15203, 17847, 41193, 45609, 123579, 131539, 136827, 394617, 410481, 1183851, 3025397, 3551553, 9076191, 27228573, 81685719]

約数ペア:

[(1, 81685719), (3, 27228573), (9, 9076191), (23, 3551553), (27, 3025397), (69, 1183851), (199, 410481), (207, 394617), (597, 136827), (621, 131539), (661, 123579), (1791, 45609), (1983, 41193), (4577, 17847), (5373, 15203), (5949, 13731)]