21693155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20759}}^1$

素因数の和:20794

約数の個数: 16

約数和(自身を含む): 29894400

約数和(自身を除く): 8201245

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20759, 103795, 228349, 394421, 1141745, 1972105, 4338631, 21693155]

約数ペア:

[(1, 21693155), (5, 4338631), (11, 1972105), (19, 1141745), (55, 394421), (95, 228349), (209, 103795), (1045, 20759)]