21291243

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{2311}}^1$

素因数の和:2434

約数の個数: 16

約数和(自身を含む): 29519616

約数和(自身を除く): 8228373

約数列:

[1, 3, 37, 83, 111, 249, 2311, 3071, 6933, 9213, 85507, 191813, 256521, 575439, 7097081, 21291243]

約数ペア:

[(1, 21291243), (3, 7097081), (37, 575439), (83, 256521), (111, 191813), (249, 85507), (2311, 9213), (3071, 6933)]