81947135

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1\times {\mathrm{643}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 100154880

約数和(自身を除く): 18207745

約数列:

[1, 5, 71, 355, 359, 643, 1795, 3215, 25489, 45653, 127445, 228265, 230837, 1154185, 16389427, 81947135]

約数ペア:

[(1, 81947135), (5, 16389427), (71, 1154185), (355, 230837), (359, 228265), (643, 127445), (1795, 45653), (3215, 25489)]