21873903

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{821}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 29828736

約数和(自身を除く): 7954833

約数列:

[1, 3, 83, 107, 249, 321, 821, 2463, 8881, 26643, 68143, 87847, 204429, 263541, 7291301, 21873903]

約数ペア:

[(1, 21873903), (3, 7291301), (83, 263541), (107, 204429), (249, 87847), (321, 68143), (821, 26643), (2463, 8881)]