21183891

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{4127}}^1$

素因数の和:4218

約数の個数: 16

約数和(自身を含む): 29721600

約数和(自身を除く): 8537709

約数列:

[1, 3, 29, 59, 87, 177, 1711, 4127, 5133, 12381, 119683, 243493, 359049, 730479, 7061297, 21183891]

約数ペア:

[(1, 21183891), (3, 7061297), (29, 730479), (59, 359049), (87, 243493), (177, 119683), (1711, 12381), (4127, 5133)]