28873141

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{661}}^1$

素因数の和:721

約数の個数: 18

約数和(自身を含む): 33545526

約数和(自身を除く): 4672385

約数列:

[1, 11, 19, 121, 209, 361, 661, 2299, 3971, 7271, 12559, 43681, 79981, 138149, 238621, 1519639, 2624831, 28873141]

約数ペア:

[(1, 28873141), (11, 2624831), (19, 1519639), (121, 238621), (209, 138149), (361, 79981), (661, 43681), (2299, 12559), (3971, 7271)]