21891903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{39023}}^1$

素因数の和:39054

約数の個数: 16

約数和(自身を含む): 33716736

約数和(自身を除く): 11824833

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 39023, 117069, 429253, 663391, 1287759, 1990173, 7297301, 21891903]

約数ペア:

[(1, 21891903), (3, 7297301), (11, 1990173), (17, 1287759), (33, 663391), (51, 429253), (187, 117069), (561, 39023)]