21247031

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 23654400

約数和(自身を除く): 2407369

約数列:

[1, 13, 43, 191, 199, 559, 2483, 2587, 8213, 8557, 38009, 106769, 111241, 494117, 1634387, 21247031]

約数ペア:

[(1, 21247031), (13, 1634387), (43, 494117), (191, 111241), (199, 106769), (559, 38009), (2483, 8557), (2587, 8213)]