81856579

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{8431}}^1$

素因数の和:8530

約数の個数: 16

約数和(自身を含む): 99834880

約数和(自身を除く): 17978301

約数列:

[1, 7, 19, 73, 133, 511, 1387, 8431, 9709, 59017, 160189, 615463, 1121323, 4308241, 11693797, 81856579]

約数ペア:

[(1, 81856579), (7, 11693797), (19, 4308241), (73, 1121323), (133, 615463), (511, 160189), (1387, 59017), (8431, 9709)]