21193293

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{1153}}^1$

素因数の和:1724

約数の個数: 16

約数和(自身を含む): 30908736

約数和(自身を除く): 9715443

約数列:

[1, 3, 11, 33, 557, 1153, 1671, 3459, 6127, 12683, 18381, 38049, 642221, 1926663, 7064431, 21193293]

約数ペア:

[(1, 21193293), (3, 7064431), (11, 1926663), (33, 642221), (557, 38049), (1153, 18381), (1671, 12683), (3459, 6127)]