21078861

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{2309}}^1$

素因数の和:2508

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 8858739

約数列:

[1, 3, 17, 51, 179, 537, 2309, 3043, 6927, 9129, 39253, 117759, 413311, 1239933, 7026287, 21078861]

約数ペア:

[(1, 21078861), (3, 7026287), (17, 1239933), (51, 413311), (179, 117759), (537, 39253), (2309, 9129), (3043, 6927)]