21215265

素因数分解:

$3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8677}}^1$

素因数の和:8848

約数の個数: 16

約数和(自身を含む): 34156608

約数和(自身を除く): 12941343

約数列:

[1, 3, 5, 15, 163, 489, 815, 2445, 8677, 26031, 43385, 130155, 1414351, 4243053, 7071755, 21215265]

約数ペア:

[(1, 21215265), (3, 7071755), (5, 4243053), (15, 1414351), (163, 130155), (489, 43385), (815, 26031), (2445, 8677)]