21490139

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:466

約数の個数: 16

約数和(自身を含む): 24178176

約数和(自身を除く): 2688037

約数列:

[1, 11, 47, 197, 211, 517, 2167, 2321, 9259, 9917, 41567, 101849, 109087, 457237, 1953649, 21490139]

約数ペア:

[(1, 21490139), (11, 1953649), (47, 457237), (197, 109087), (211, 101849), (517, 41567), (2167, 9917), (2321, 9259)]